Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 1723 insertions, 0 deletions

diff --git a/Source/WebKit/win/WebPreferences.cpp b/Source/WebKit/win/WebPreferences.cpp
new file mode 100644
index 000000000..39e4644c0
--- /dev/null
+++ b/Source/WebKit/win/WebPreferences.cpp
@@ -0,0 +1,1723 @@
+/*
+ * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "WebKit.h"
+#include "WebKitDLL.h"
+#include "WebPreferences.h"
+
+#include "WebNotificationCenter.h"
+#include "WebPreferenceKeysPrivate.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <WebCore/CACFLayerTreeHost.h>
+#include <WebCore/COMPtr.h>
+#include <WebCore/FileSystem.h>
+#include <WebCore/Font.h>
+#include <WebCore/LocalizedStrings.h>
+#include <limits>
+#include <shlobj.h>
+#include <wchar.h>
+#include <wtf/HashMap.h>
+#include <wtf/OwnArrayPtr.h>
+#include <wtf/text/CString.h>
+#include <wtf/text/StringHash.h>
+#include <wtf/text/WTFString.h>
+
+#if USE(CG)
+#include <CoreGraphics/CoreGraphics.h>
+#include <WebKitSystemInterface/WebKitSystemInterface.h>
+#endif
+
+using namespace WebCore;
+using std::numeric_limits;
+
+static const String& oldPreferencesPath()
+{
+    static String path = pathByAppendingComponent(roamingUserSpecificStorageDirectory(), "WebKitPreferences.plist");
+    return path;
+}
+
+template<typename NumberType> struct CFNumberTraits { static const unsigned Type; };
+template<> struct CFNumberTraits<int> { static const unsigned Type = kCFNumberSInt32Type; };
+template<> struct CFNumberTraits<LONGLONG> { static const unsigned Type = kCFNumberLongLongType; };
+template<> struct CFNumberTraits<float> { static const unsigned Type = kCFNumberFloat32Type; };
+
+template<typename NumberType>
+static NumberType numberValueForPreferencesValue(CFPropertyListRef value)
+{
+    if (!value)
+        return 0;
+
+    CFTypeID cfType = CFGetTypeID(value);
+    if (cfType == CFStringGetTypeID())
+        return static_cast<NumberType>(CFStringGetIntValue(static_cast<CFStringRef>(value)));
+    else if (cfType == CFBooleanGetTypeID()) {
+        Boolean boolVal = CFBooleanGetValue(static_cast<CFBooleanRef>(value));
+        return boolVal ? 1 : 0;
+    } else if (cfType == CFNumberGetTypeID()) {
+        NumberType val = 0;
+        CFNumberGetValue(static_cast<CFNumberRef>(value), CFNumberTraits<NumberType>::Type, &val);
+        return val;
+    }
+
+    return 0;
+}
+
+template<typename NumberType>
+static RetainPtr<CFNumberRef> cfNumber(NumberType value)
+{
+    return RetainPtr<CFNumberRef>(AdoptCF, CFNumberCreate(0, CFNumberTraits<NumberType>::Type, &value));
+}
+
+static bool booleanValueForPreferencesValue(CFPropertyListRef value)
+{
+    return numberValueForPreferencesValue<int>(value);
+}
+
+// WebPreferences ----------------------------------------------------------------
+
+static CFDictionaryRef defaultSettings;
+
+static HashMap<WTF::String, COMPtr<WebPreferences> > webPreferencesInstances;
+
+WebPreferences* WebPreferences::sharedStandardPreferences()
+{
+    static WebPreferences* standardPreferences;
+    if (!standardPreferences) {
+        standardPreferences = WebPreferences::createInstance();
+        standardPreferences->setAutosaves(TRUE);
+        standardPreferences->load();
+    }
+
+    return standardPreferences;
+}
+
+WebPreferences::WebPreferences()
+    : m_refCount(0)
+    , m_autoSaves(0)
+    , m_automaticallyDetectsCacheModel(true)
+    , m_numWebViews(0)
+{
+    gClassCount++;
+    gClassNameCount.add("WebPreferences");
+}
+
+WebPreferences::~WebPreferences()
+{
+    gClassCount--;
+    gClassNameCount.remove("WebPreferences");
+}
+
+WebPreferences* WebPreferences::createInstance()
+{
+    WebPreferences* instance = new WebPreferences();
+    instance->AddRef();
+    return instance;
+}
+
+HRESULT WebPreferences::postPreferencesChangesNotification()
+{
+    IWebNotificationCenter* nc = WebNotificationCenter::defaultCenterInternal();
+    HRESULT hr = nc->postNotificationName(webPreferencesChangedNotification(), static_cast<IWebPreferences*>(this), 0);
+    if (FAILED(hr))
+        return hr;
+
+    return S_OK;
+}
+
+WebPreferences* WebPreferences::getInstanceForIdentifier(BSTR identifier)
+{
+    if (!identifier)
+        return sharedStandardPreferences();
+
+    WTF::String identifierString(identifier, SysStringLen(identifier));
+    return webPreferencesInstances.get(identifierString).get();
+}
+
+void WebPreferences::setInstance(WebPreferences* instance, BSTR identifier)
+{
+    if (!identifier || !instance)
+        return;
+    WTF::String identifierString(identifier, SysStringLen(identifier));
+    webPreferencesInstances.add(identifierString, instance);
+}
+
+void WebPreferences::removeReferenceForIdentifier(BSTR identifier)
+{
+    if (!identifier || webPreferencesInstances.isEmpty())
+        return;
+
+    WTF::String identifierString(identifier, SysStringLen(identifier));
+    WebPreferences* webPreference = webPreferencesInstances.get(identifierString).get();
+    if (webPreference && webPreference->m_refCount == 1)
+        webPreferencesInstances.remove(identifierString);
+}
+
+void WebPreferences::initializeDefaultSettings()
+{
+    if (defaultSettings)
+        return;
+
+    CFMutableDictionaryRef defaults = CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitStandardFontPreferenceKey), CFSTR("Times New Roman"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitFixedFontPreferenceKey), CFSTR("Courier New"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitSerifFontPreferenceKey), CFSTR("Times New Roman"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitSansSerifFontPreferenceKey), CFSTR("Arial"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitCursiveFontPreferenceKey), CFSTR("Comic Sans MS"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitFantasyFontPreferenceKey), CFSTR("Comic Sans MS"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPictographFontPreferenceKey), CFSTR("Times New Roman"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitMinimumFontSizePreferenceKey), CFSTR("0"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitMinimumLogicalFontSizePreferenceKey), CFSTR("9"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDefaultFontSizePreferenceKey), CFSTR("16"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDefaultFixedFontSizePreferenceKey), CFSTR("13"));
+
+    String defaultDefaultEncoding(WEB_UI_STRING("ISO-8859-1", "The default, default character encoding"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDefaultTextEncodingNamePreferenceKey), defaultDefaultEncoding.createCFString());
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitUserStyleSheetEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitUserStyleSheetLocationPreferenceKey), CFSTR(""));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShouldPrintBackgroundsPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitTextAreasAreResizablePreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitJavaEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitJavaScriptEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitWebSecurityEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAllowUniversalAccessFromFileURLsPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAllowFileAccessFromFileURLsPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitJavaScriptCanAccessClipboardPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitXSSAuditorEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitFrameFlatteningEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitJavaScriptCanOpenWindowsAutomaticallyPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPluginsEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDatabasesEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitLocalStorageEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitExperimentalNotificationsEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitZoomsTextOnlyPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAllowAnimatedImagesPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAllowAnimatedImageLoopingPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDisplayImagesKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitLoadSiteIconsKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitBackForwardCacheExpirationIntervalKey), CFSTR("1800"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitTabToLinksPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPrivateBrowsingEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitRespectStandardStyleKeyEquivalentsPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShowsURLsInToolTipsPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShowsToolTipOverTruncatedTextPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPDFDisplayModePreferenceKey), CFSTR("1"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPDFScaleFactorPreferenceKey), CFSTR("0"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShouldDisplaySubtitlesPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShouldDisplayCaptionsPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShouldDisplayTextDescriptionsPreferenceKey), kCFBooleanFalse);
+
+    RetainPtr<CFStringRef> linkBehaviorStringRef(AdoptCF, CFStringCreateWithFormat(0, 0, CFSTR("%d"), WebKitEditableLinkDefaultBehavior));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitEditableLinkBehaviorPreferenceKey), linkBehaviorStringRef.get());
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitHistoryItemLimitKey), CFSTR("1000"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitHistoryAgeInDaysLimitKey), CFSTR("7"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitIconDatabaseLocationKey), CFSTR(""));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitIconDatabaseEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitFontSmoothingTypePreferenceKey), CFSTR("2"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitFontSmoothingContrastPreferenceKey), CFSTR("2"));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitCookieStorageAcceptPolicyPreferenceKey), CFSTR("2"));
+    CFDictionaryAddValue(defaults, CFSTR(WebContinuousSpellCheckingEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebGrammarCheckingEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(AllowContinuousSpellCheckingPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitUsesPageCachePreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitLocalStorageDatabasePathPreferenceKey), CFSTR(""));
+
+    RetainPtr<CFStringRef> cacheModelRef(AdoptCF, CFStringCreateWithFormat(0, 0, CFSTR("%d"), WebCacheModelDocumentViewer));
+    CFDictionaryAddValue(defaults, CFSTR(WebKitCacheModelPreferenceKey), cacheModelRef.get());
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAuthorAndUserStylesEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitApplicationChromeModePreferenceKey), kCFBooleanFalse);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitOfflineWebApplicationCacheEnabledPreferenceKey), kCFBooleanFalse);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitPaintNativeControlsPreferenceKey), kCFBooleanTrue);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitUseHighResolutionTimersPreferenceKey), kCFBooleanTrue);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitAcceleratedCompositingEnabledPreferenceKey), kCFBooleanFalse);
+    
+    CFDictionaryAddValue(defaults, CFSTR(WebKitShowDebugBordersPreferenceKey), kCFBooleanFalse);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitDNSPrefetchingEnabledPreferenceKey), kCFBooleanFalse);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitMemoryInfoEnabledPreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitHyperlinkAuditingEnabledPreferenceKey), kCFBooleanTrue);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitHixie76WebSocketProtocolEnabledPreferenceKey), kCFBooleanTrue);
+
+    CFDictionaryAddValue(defaults, CFSTR(WebKitMediaPlaybackRequiresUserGesturePreferenceKey), kCFBooleanFalse);
+    CFDictionaryAddValue(defaults, CFSTR(WebKitMediaPlaybackAllowsInlinePreferenceKey), kCFBooleanTrue);
+
+    defaultSettings = defaults;
+}
+
+RetainPtr<CFPropertyListRef> WebPreferences::valueForKey(CFStringRef key)
+{
+    RetainPtr<CFPropertyListRef> value = CFDictionaryGetValue(m_privatePrefs.get(), key);
+    if (value)
+        return value;
+
+    value.adoptCF(CFPreferencesCopyAppValue(key, kCFPreferencesCurrentApplication));
+    if (value)
+        return value;
+
+    return CFDictionaryGetValue(defaultSettings, key);
+}
+
+void WebPreferences::setValueForKey(CFStringRef key, CFPropertyListRef value)
+{
+    CFDictionarySetValue(m_privatePrefs.get(), key, value);
+    if (m_autoSaves) {
+        CFPreferencesSetAppValue(key, value, kCFPreferencesCurrentApplication);
+        save();
+    }
+}
+
+BSTR WebPreferences::stringValueForKey(CFStringRef key)
+{
+    RetainPtr<CFPropertyListRef> value = valueForKey(key);
+    
+    if (!value || (CFGetTypeID(value.get()) != CFStringGetTypeID()))
+        return 0;
+
+    CFStringRef str = static_cast<CFStringRef>(value.get());
+
+    CFIndex length = CFStringGetLength(str);
+    const UniChar* uniChars = CFStringGetCharactersPtr(str);
+    if (uniChars)
+        return SysAllocStringLen((LPCTSTR)uniChars, length);
+
+    BSTR bstr = SysAllocStringLen(0, length);
+    if (!bstr)
+        return 0;
+
+    if (!CFStringGetCString(str, (char*)bstr, (length+1)*sizeof(WCHAR), kCFStringEncodingUTF16)) {
+        SysFreeString(bstr);
+        return 0;
+    }
+        
+    bstr[length] = 0;
+    return bstr;
+}
+
+int WebPreferences::integerValueForKey(CFStringRef key)
+{
+    return numberValueForPreferencesValue<int>(valueForKey(key).get());
+}
+
+BOOL WebPreferences::boolValueForKey(CFStringRef key)
+{
+    return booleanValueForPreferencesValue(valueForKey(key).get());
+}
+
+float WebPreferences::floatValueForKey(CFStringRef key)
+{
+    return numberValueForPreferencesValue<float>(valueForKey(key).get());
+}
+
+LONGLONG WebPreferences::longlongValueForKey(CFStringRef key)
+{
+    return numberValueForPreferencesValue<LONGLONG>(valueForKey(key).get());
+}
+
+void WebPreferences::setStringValue(CFStringRef key, LPCTSTR value)
+{
+    BSTR val = stringValueForKey(key);
+    if (val && !wcscmp(val, value))
+        return;
+    SysFreeString(val);
+    
+    RetainPtr<CFStringRef> valueRef(AdoptCF,
+        CFStringCreateWithCharactersNoCopy(0, (UniChar*)_wcsdup(value), (CFIndex)wcslen(value), kCFAllocatorMalloc));
+    setValueForKey(key, valueRef.get());
+
+    postPreferencesChangesNotification();
+}
+
+void WebPreferences::setIntegerValue(CFStringRef key, int value)
+{
+    if (integerValueForKey(key) == value)
+        return;
+
+    setValueForKey(key, cfNumber(value).get());
+
+    postPreferencesChangesNotification();
+}
+
+void WebPreferences::setFloatValue(CFStringRef key, float value)
+{
+    if (floatValueForKey(key) == value)
+        return;
+
+    setValueForKey(key, cfNumber(value).get());
+
+    postPreferencesChangesNotification();
+}
+
+void WebPreferences::setBoolValue(CFStringRef key, BOOL value)
+{
+    if (boolValueForKey(key) == value)
+        return;
+
+    setValueForKey(key, value ? kCFBooleanTrue : kCFBooleanFalse);
+
+    postPreferencesChangesNotification();
+}
+
+void WebPreferences::setLongLongValue(CFStringRef key, LONGLONG value)
+{
+    if (longlongValueForKey(key) == value)
+        return;
+
+    setValueForKey(key, cfNumber(value).get());
+
+    postPreferencesChangesNotification();
+}
+
+BSTR WebPreferences::webPreferencesChangedNotification()
+{
+    static BSTR webPreferencesChangedNotification = SysAllocString(WebPreferencesChangedNotification);
+    return webPreferencesChangedNotification;
+}
+
+BSTR WebPreferences::webPreferencesRemovedNotification()
+{
+    static BSTR webPreferencesRemovedNotification = SysAllocString(WebPreferencesRemovedNotification);
+    return webPreferencesRemovedNotification;
+}
+
+void WebPreferences::save()
+{
+    CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication);
+}
+
+void WebPreferences::load()
+{
+    initializeDefaultSettings();
+
+    m_privatePrefs.adoptCF(CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
+
+    migrateWebKitPreferencesToCFPreferences();
+}
+
+void WebPreferences::migrateWebKitPreferencesToCFPreferences()
+{
+    CFStringRef didMigrateKey = CFSTR(WebKitDidMigrateWebKitPreferencesToCFPreferencesPreferenceKey);
+    if (boolValueForKey(didMigrateKey))
+        return;
+    bool oldValue = m_autoSaves;
+    m_autoSaves = true;
+    setBoolValue(didMigrateKey, TRUE);
+    m_autoSaves = oldValue;
+
+    WTF::CString path = oldPreferencesPath().utf8();
+
+    RetainPtr<CFURLRef> urlRef(AdoptCF, CFURLCreateFromFileSystemRepresentation(0, reinterpret_cast<const UInt8*>(path.data()), path.length(), false));
+    if (!urlRef)
+        return;
+
+    RetainPtr<CFReadStreamRef> stream(AdoptCF, CFReadStreamCreateWithFile(0, urlRef.get()));
+    if (!stream)
+        return;
+
+    if (!CFReadStreamOpen(stream.get()))
+        return;
+
+    CFPropertyListFormat format = kCFPropertyListBinaryFormat_v1_0 | kCFPropertyListXMLFormat_v1_0;
+    RetainPtr<CFPropertyListRef> plist(AdoptCF, CFPropertyListCreateFromStream(0, stream.get(), 0, kCFPropertyListMutableContainersAndLeaves, &format, 0));
+    CFReadStreamClose(stream.get());
+
+    if (!plist || CFGetTypeID(plist.get()) != CFDictionaryGetTypeID())
+        return;
+
+    copyWebKitPreferencesToCFPreferences(static_cast<CFDictionaryRef>(plist.get()));
+
+    deleteFile(oldPreferencesPath());
+}
+
+void WebPreferences::copyWebKitPreferencesToCFPreferences(CFDictionaryRef dict)
+{
+    ASSERT_ARG(dict, dict);
+
+    int count = CFDictionaryGetCount(dict);
+    if (count <= 0)
+        return;
+
+    CFStringRef didRemoveDefaultsKey = CFSTR(WebKitDidMigrateDefaultSettingsFromSafari3BetaPreferenceKey);
+    bool omitDefaults = !booleanValueForPreferencesValue(CFDictionaryGetValue(dict, didRemoveDefaultsKey));
+
+    OwnArrayPtr<CFTypeRef> keys = adoptArrayPtr(new CFTypeRef[count]);
+    OwnArrayPtr<CFTypeRef> values = adoptArrayPtr(new CFTypeRef[count]);
+    CFDictionaryGetKeysAndValues(dict, keys.get(), values.get());
+
+    for (int i = 0; i < count; ++i) {
+        if (!keys[i] || !values[i] || CFGetTypeID(keys[i]) != CFStringGetTypeID())
+            continue;
+
+        if (omitDefaults) {
+            CFTypeRef defaultValue = CFDictionaryGetValue(defaultSettings, keys[i]);
+            if (defaultValue && CFEqual(defaultValue, values[i]))
+                continue;
+        }
+
+        setValueForKey(static_cast<CFStringRef>(keys[i]), values[i]);
+    }
+}
+
+// IUnknown -------------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebPreferences::QueryInterface(REFIID riid, void** ppvObject)
+{
+    *ppvObject = 0;
+    if (IsEqualGUID(riid, IID_IUnknown))
+        *ppvObject = static_cast<IWebPreferences*>(this);
+    else if (IsEqualGUID(riid, IID_IWebPreferences))
+        *ppvObject = static_cast<IWebPreferences*>(this);
+    else if (IsEqualGUID(riid, IID_IWebPreferencesPrivate))
+        *ppvObject = static_cast<IWebPreferencesPrivate*>(this);
+    else if (IsEqualGUID(riid, CLSID_WebPreferences))
+        *ppvObject = this;
+    else
+        return E_NOINTERFACE;
+
+    AddRef();
+    return S_OK;
+}
+
+ULONG STDMETHODCALLTYPE WebPreferences::AddRef(void)
+{
+    return ++m_refCount;
+}
+
+ULONG STDMETHODCALLTYPE WebPreferences::Release(void)
+{
+    ULONG newRef = --m_refCount;
+    if (!newRef)
+        delete(this);
+
+    return newRef;
+}
+
+// IWebPreferences ------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebPreferences::standardPreferences( 
+    /* [retval][out] */ IWebPreferences** standardPreferences)
+{
+    if (!standardPreferences)
+        return E_POINTER;
+    *standardPreferences = sharedStandardPreferences();
+    (*standardPreferences)->AddRef();
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::initWithIdentifier( 
+        /* [in] */ BSTR anIdentifier,
+        /* [retval][out] */ IWebPreferences** preferences)
+{
+    WebPreferences *instance = getInstanceForIdentifier(anIdentifier);
+    if (instance) {
+        *preferences = instance;
+        instance->AddRef();
+        return S_OK;
+    }
+
+    load();
+
+    *preferences = this;
+    AddRef();
+
+    if (anIdentifier) {
+        m_identifier = anIdentifier;
+        setInstance(this, m_identifier);
+    }
+
+    this->postPreferencesChangesNotification();
+
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::identifier( 
+    /* [retval][out] */ BSTR* ident)
+{
+    if (!ident)
+        return E_POINTER;
+    *ident = m_identifier ? SysAllocString(m_identifier) : 0;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::standardFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitStandardFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setStandardFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitStandardFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::fixedFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitFixedFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setFixedFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitFixedFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::serifFontFamily( 
+    /* [retval][out] */ BSTR* fontFamily)
+{
+    *fontFamily = stringValueForKey(CFSTR(WebKitSerifFontPreferenceKey));
+    return (*fontFamily) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setSerifFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitSerifFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::sansSerifFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitSansSerifFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setSansSerifFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitSansSerifFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::cursiveFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitCursiveFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setCursiveFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitCursiveFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::fantasyFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitFantasyFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setFantasyFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitFantasyFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::pictographFontFamily( 
+    /* [retval][out] */ BSTR* family)
+{
+    *family = stringValueForKey(CFSTR(WebKitPictographFontPreferenceKey));
+    return (*family) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setPictographFontFamily( 
+    /* [in] */ BSTR family)
+{
+    setStringValue(CFSTR(WebKitPictographFontPreferenceKey), family);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::defaultFontSize( 
+    /* [retval][out] */ int* fontSize)
+{
+    *fontSize = integerValueForKey(CFSTR(WebKitDefaultFontSizePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setDefaultFontSize( 
+    /* [in] */ int fontSize)
+{
+    setIntegerValue(CFSTR(WebKitDefaultFontSizePreferenceKey), fontSize);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::defaultFixedFontSize( 
+    /* [retval][out] */ int* fontSize)
+{
+    *fontSize = integerValueForKey(CFSTR(WebKitDefaultFixedFontSizePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setDefaultFixedFontSize( 
+    /* [in] */ int fontSize)
+{
+    setIntegerValue(CFSTR(WebKitDefaultFixedFontSizePreferenceKey), fontSize);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::minimumFontSize( 
+    /* [retval][out] */ int* fontSize)
+{
+    *fontSize = integerValueForKey(CFSTR(WebKitMinimumFontSizePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setMinimumFontSize( 
+    /* [in] */ int fontSize)
+{
+    setIntegerValue(CFSTR(WebKitMinimumFontSizePreferenceKey), fontSize);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::minimumLogicalFontSize( 
+    /* [retval][out] */ int* fontSize)
+{
+    *fontSize = integerValueForKey(CFSTR(WebKitMinimumLogicalFontSizePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setMinimumLogicalFontSize( 
+    /* [in] */ int fontSize)
+{
+    setIntegerValue(CFSTR(WebKitMinimumLogicalFontSizePreferenceKey), fontSize);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::defaultTextEncodingName( 
+    /* [retval][out] */ BSTR* name)
+{
+    *name = stringValueForKey(CFSTR(WebKitDefaultTextEncodingNamePreferenceKey));
+    return (*name) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setDefaultTextEncodingName( 
+    /* [in] */ BSTR name)
+{
+    setStringValue(CFSTR(WebKitDefaultTextEncodingNamePreferenceKey), name);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::userStyleSheetEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitUserStyleSheetEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setUserStyleSheetEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitUserStyleSheetEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::userStyleSheetLocation( 
+    /* [retval][out] */ BSTR* location)
+{
+    *location = stringValueForKey(CFSTR(WebKitUserStyleSheetLocationPreferenceKey));
+    return (*location) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setUserStyleSheetLocation( 
+    /* [in] */ BSTR location)
+{
+    setStringValue(CFSTR(WebKitUserStyleSheetLocationPreferenceKey), location);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::isJavaEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitJavaEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setJavaEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitJavaEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::isJavaScriptEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitJavaScriptEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setJavaScriptEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitJavaScriptEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::isWebSecurityEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitWebSecurityEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setWebSecurityEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitWebSecurityEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::allowUniversalAccessFromFileURLs(
+    /* [retval][out] */ BOOL* allowAccess)
+{
+    *allowAccess = boolValueForKey(CFSTR(WebKitAllowUniversalAccessFromFileURLsPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAllowUniversalAccessFromFileURLs(
+    /* [in] */ BOOL allowAccess)
+{
+    setBoolValue(CFSTR(WebKitAllowUniversalAccessFromFileURLsPreferenceKey), allowAccess);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::allowFileAccessFromFileURLs(
+    /* [retval][out] */ BOOL* allowAccess)
+{
+    *allowAccess = boolValueForKey(CFSTR(WebKitAllowFileAccessFromFileURLsPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAllowFileAccessFromFileURLs(
+    /* [in] */ BOOL allowAccess)
+{
+    setBoolValue(CFSTR(WebKitAllowFileAccessFromFileURLsPreferenceKey), allowAccess);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::javaScriptCanAccessClipboard(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitJavaScriptCanAccessClipboardPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setJavaScriptCanAccessClipboard(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitJavaScriptCanAccessClipboardPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::isXSSAuditorEnabled(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitXSSAuditorEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setXSSAuditorEnabled(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitXSSAuditorEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::isFrameFlatteningEnabled(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitFrameFlatteningEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setFrameFlatteningEnabled(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitFrameFlatteningEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::javaScriptCanOpenWindowsAutomatically( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitJavaScriptCanOpenWindowsAutomaticallyPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setJavaScriptCanOpenWindowsAutomatically( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitJavaScriptCanOpenWindowsAutomaticallyPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::arePlugInsEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitPluginsEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setPlugInsEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitPluginsEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::allowsAnimatedImages( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitAllowAnimatedImagesPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAllowsAnimatedImages( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitAllowAnimatedImagesPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::allowAnimatedImageLooping( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitAllowAnimatedImageLoopingPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAllowAnimatedImageLooping( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitAllowAnimatedImageLoopingPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setLoadsImagesAutomatically( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitDisplayImagesKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::loadsImagesAutomatically( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitDisplayImagesKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setLoadsSiteIconsIgnoringImageLoadingPreference(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitLoadSiteIconsKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::loadsSiteIconsIgnoringImageLoadingPreference(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitLoadSiteIconsKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setHixie76WebSocketProtocolEnabled(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitHixie76WebSocketProtocolEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::hixie76WebSocketProtocolEnabled(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitHixie76WebSocketProtocolEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setMediaPlaybackRequiresUserGesture(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitMediaPlaybackRequiresUserGesturePreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::mediaPlaybackRequiresUserGesture(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitMediaPlaybackRequiresUserGesturePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setMediaPlaybackAllowsInline(
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitMediaPlaybackAllowsInlinePreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::mediaPlaybackAllowsInline(
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitMediaPlaybackAllowsInlinePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAutosaves( 
+    /* [in] */ BOOL enabled)
+{
+    m_autoSaves = !!enabled;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::autosaves( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = m_autoSaves ? TRUE : FALSE;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setShouldPrintBackgrounds( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitShouldPrintBackgroundsPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::shouldPrintBackgrounds( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitShouldPrintBackgroundsPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setPrivateBrowsingEnabled( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitPrivateBrowsingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::privateBrowsingEnabled( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitPrivateBrowsingEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setTabsToLinks( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitTabToLinksPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::tabsToLinks( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitTabToLinksPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setUsesPageCache( 
+        /* [in] */ BOOL usesPageCache)
+{
+    setBoolValue(CFSTR(WebKitUsesPageCachePreferenceKey), usesPageCache);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::usesPageCache( 
+    /* [retval][out] */ BOOL* usesPageCache)
+{
+    *usesPageCache = boolValueForKey(CFSTR(WebKitUsesPageCachePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::textAreasAreResizable( 
+    /* [retval][out] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitTextAreasAreResizablePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setTextAreasAreResizable( 
+    /* [in] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitTextAreasAreResizablePreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::historyItemLimit(int* limit)
+{
+    *limit = integerValueForKey(CFSTR(WebKitHistoryItemLimitKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setHistoryItemLimit(int limit)
+{
+    setIntegerValue(CFSTR(WebKitHistoryItemLimitKey), limit);
+    return S_OK;
+}
+
+HRESULT WebPreferences::historyAgeInDaysLimit(int* limit)
+{
+    *limit = integerValueForKey(CFSTR(WebKitHistoryAgeInDaysLimitKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setHistoryAgeInDaysLimit(int limit)
+{
+    setIntegerValue(CFSTR(WebKitHistoryAgeInDaysLimitKey), limit);
+    return S_OK;
+}
+
+HRESULT WebPreferences::unused1()
+{
+    ASSERT_NOT_REACHED();
+    return E_FAIL;
+}
+
+HRESULT WebPreferences::unused2()
+{
+    ASSERT_NOT_REACHED();
+    return E_FAIL;
+}
+
+HRESULT WebPreferences::iconDatabaseLocation(
+    /* [out] */ BSTR* location)
+{
+    *location = stringValueForKey(CFSTR(WebKitIconDatabaseLocationKey));
+    return (*location) ? S_OK : E_FAIL;
+}
+
+HRESULT WebPreferences::setIconDatabaseLocation(
+    /* [in] */ BSTR location)
+{
+    setStringValue(CFSTR(WebKitIconDatabaseLocationKey), location);
+    return S_OK;
+}
+
+HRESULT WebPreferences::iconDatabaseEnabled(BOOL* enabled)//location)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitIconDatabaseEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setIconDatabaseEnabled(BOOL enabled )//location)
+{
+    setBoolValue(CFSTR(WebKitIconDatabaseEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::fontSmoothing( 
+    /* [retval][out] */ FontSmoothingType* smoothingType)
+{
+    *smoothingType = (FontSmoothingType) integerValueForKey(CFSTR(WebKitFontSmoothingTypePreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setFontSmoothing( 
+    /* [in] */ FontSmoothingType smoothingType)
+{
+    setIntegerValue(CFSTR(WebKitFontSmoothingTypePreferenceKey), smoothingType);
+    if (smoothingType == FontSmoothingTypeWindows)
+        smoothingType = FontSmoothingTypeMedium;
+#if USE(CG)
+    wkSetFontSmoothingLevel((int)smoothingType);
+#endif
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::fontSmoothingContrast( 
+    /* [retval][out] */ float* contrast)
+{
+    *contrast = floatValueForKey(CFSTR(WebKitFontSmoothingContrastPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setFontSmoothingContrast( 
+    /* [in] */ float contrast)
+{
+    setFloatValue(CFSTR(WebKitFontSmoothingContrastPreferenceKey), contrast);
+#if USE(CG)
+    wkSetFontSmoothingContrast(contrast);
+#endif
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::editableLinkBehavior(
+    /* [out, retval] */ WebKitEditableLinkBehavior* editableLinkBehavior)
+{
+    WebKitEditableLinkBehavior value = (WebKitEditableLinkBehavior) integerValueForKey(CFSTR(WebKitEditableLinkBehaviorPreferenceKey));
+    switch (value) {
+        case WebKitEditableLinkDefaultBehavior:
+        case WebKitEditableLinkAlwaysLive:
+        case WebKitEditableLinkOnlyLiveWithShiftKey:
+        case WebKitEditableLinkLiveWhenNotFocused:
+        case WebKitEditableLinkNeverLive:
+            *editableLinkBehavior = value;
+            break;
+        default: // ensure that a valid result is returned
+            *editableLinkBehavior = WebKitEditableLinkDefaultBehavior;
+            break;
+    }
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setEditableLinkBehavior(
+    /* [in] */ WebKitEditableLinkBehavior behavior)
+{
+    setIntegerValue(CFSTR(WebKitEditableLinkBehaviorPreferenceKey), behavior);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::editingBehavior(
+    /* [out, retval] */ WebKitEditingBehavior* editingBehavior)
+{
+    *editingBehavior = (WebKitEditingBehavior) integerValueForKey(CFSTR(WebKitEditingBehaviorPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setEditingBehavior(
+    /* [in] */ WebKitEditingBehavior behavior)
+{
+    setIntegerValue(CFSTR(WebKitEditingBehaviorPreferenceKey), behavior);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::hyperlinkAuditingEnabled(
+    /* [in] */ BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitHyperlinkAuditingEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setHyperlinkAuditingEnabled(
+    /* [retval][out] */ BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitHyperlinkAuditingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::cookieStorageAcceptPolicy( 
+        /* [retval][out] */ WebKitCookieStorageAcceptPolicy *acceptPolicy )
+{
+    if (!acceptPolicy)
+        return E_POINTER;
+
+    *acceptPolicy = (WebKitCookieStorageAcceptPolicy)integerValueForKey(CFSTR(WebKitCookieStorageAcceptPolicyPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setCookieStorageAcceptPolicy( 
+        /* [in] */ WebKitCookieStorageAcceptPolicy acceptPolicy)
+{
+    setIntegerValue(CFSTR(WebKitCookieStorageAcceptPolicyPreferenceKey), acceptPolicy);
+    return S_OK;
+}
+
+
+HRESULT WebPreferences::continuousSpellCheckingEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebContinuousSpellCheckingEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setContinuousSpellCheckingEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebContinuousSpellCheckingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::grammarCheckingEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebGrammarCheckingEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setGrammarCheckingEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebGrammarCheckingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::allowContinuousSpellChecking(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(AllowContinuousSpellCheckingPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setAllowContinuousSpellChecking(BOOL enabled)
+{
+    setBoolValue(CFSTR(AllowContinuousSpellCheckingPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::isDOMPasteAllowed(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitDOMPasteAllowedPreferenceKey));
+    return S_OK;
+}
+    
+HRESULT WebPreferences::setDOMPasteAllowed(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitDOMPasteAllowedPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::cacheModel(WebCacheModel* cacheModel)
+{
+    if (!cacheModel)
+        return E_POINTER;
+
+    *cacheModel = (WebCacheModel)integerValueForKey(CFSTR(WebKitCacheModelPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setCacheModel(WebCacheModel cacheModel)
+{
+    setIntegerValue(CFSTR(WebKitCacheModelPreferenceKey), cacheModel);
+    return S_OK;
+}
+
+HRESULT WebPreferences::unused3()
+{
+    ASSERT_NOT_REACHED();
+    return E_FAIL;
+}
+
+HRESULT WebPreferences::unused4()
+{
+    ASSERT_NOT_REACHED();
+    return E_FAIL;
+}
+
+HRESULT WebPreferences::shouldPaintNativeControls(BOOL* shouldPaint)
+{
+    *shouldPaint = boolValueForKey(CFSTR(WebKitPaintNativeControlsPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setShouldPaintNativeControls(BOOL shouldPaint)
+{
+    setBoolValue(CFSTR(WebKitPaintNativeControlsPreferenceKey), shouldPaint);
+    return S_OK;
+}
+
+HRESULT WebPreferences::setDeveloperExtrasEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitDeveloperExtrasEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::developerExtrasEnabled(BOOL* enabled)
+{
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitDeveloperExtrasEnabledPreferenceKey));
+    return S_OK;
+}
+
+bool WebPreferences::developerExtrasDisabledByOverride()
+{
+    return !!boolValueForKey(CFSTR(DisableWebKitDeveloperExtrasPreferenceKey));
+}
+
+HRESULT WebPreferences::setAutomaticallyDetectsCacheModel(BOOL automaticallyDetectsCacheModel)
+{
+    m_automaticallyDetectsCacheModel = !!automaticallyDetectsCacheModel;
+    return S_OK;
+}
+
+HRESULT WebPreferences::automaticallyDetectsCacheModel(BOOL* automaticallyDetectsCacheModel)
+{
+    if (!automaticallyDetectsCacheModel)
+        return E_POINTER;
+
+    *automaticallyDetectsCacheModel = m_automaticallyDetectsCacheModel;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setAuthorAndUserStylesEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitAuthorAndUserStylesEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::authorAndUserStylesEnabled(BOOL* enabled)
+{
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitAuthorAndUserStylesEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::inApplicationChromeMode(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitApplicationChromeModePreferenceKey));
+    return S_OK;
+}
+    
+HRESULT WebPreferences::setApplicationChromeMode(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitApplicationChromeModePreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setOfflineWebApplicationCacheEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitOfflineWebApplicationCacheEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::offlineWebApplicationCacheEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitOfflineWebApplicationCacheEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setDatabasesEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitDatabasesEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::databasesEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitDatabasesEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setLocalStorageEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitLocalStorageEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::localStorageEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitLocalStorageEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::localStorageDatabasePath(BSTR* location)
+{
+    *location = stringValueForKey(CFSTR(WebKitLocalStorageDatabasePathPreferenceKey));
+    return (*location) ? S_OK : E_FAIL;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setLocalStorageDatabasePath(BSTR location)
+{
+    setStringValue(CFSTR(WebKitLocalStorageDatabasePathPreferenceKey), location);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setExperimentalNotificationsEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitExperimentalNotificationsEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::experimentalNotificationsEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitExperimentalNotificationsEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setZoomsTextOnly(BOOL zoomsTextOnly)
+{
+    setBoolValue(CFSTR(WebKitZoomsTextOnlyPreferenceKey), zoomsTextOnly);
+    return S_OK;
+}
+
+HRESULT WebPreferences::zoomsTextOnly(BOOL* zoomsTextOnly)
+{
+    *zoomsTextOnly = boolValueForKey(CFSTR(WebKitZoomsTextOnlyPreferenceKey));
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::setShouldUseHighResolutionTimers(BOOL useHighResolutionTimers)
+{
+    setBoolValue(CFSTR(WebKitUseHighResolutionTimersPreferenceKey), useHighResolutionTimers);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebPreferences::shouldUseHighResolutionTimers(BOOL* useHighResolutionTimers)
+{
+    *useHighResolutionTimers = boolValueForKey(CFSTR(WebKitUseHighResolutionTimersPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setPreferenceForTest(BSTR key, BSTR value)
+{
+    if (!SysStringLen(key) || !SysStringLen(value))
+        return E_FAIL;
+    RetainPtr<CFStringRef> keyString(AdoptCF, CFStringCreateWithCharacters(0, reinterpret_cast<UniChar*>(key), SysStringLen(key)));
+    RetainPtr<CFStringRef> valueString(AdoptCF, CFStringCreateWithCharacters(0, reinterpret_cast<UniChar*>(value), SysStringLen(value)));
+    setValueForKey(keyString.get(), valueString.get());
+    postPreferencesChangesNotification();
+    return S_OK;
+}
+
+HRESULT WebPreferences::setAcceleratedCompositingEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitAcceleratedCompositingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::acceleratedCompositingEnabled(BOOL* enabled)
+{
+#if USE(ACCELERATED_COMPOSITING)
+    *enabled = CACFLayerTreeHost::acceleratedCompositingAvailable() && boolValueForKey(CFSTR(WebKitAcceleratedCompositingEnabledPreferenceKey));
+#else
+    *enabled = FALSE;
+#endif
+    return S_OK;
+}
+
+HRESULT WebPreferences::showDebugBorders(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitShowDebugBordersPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setShowDebugBorders(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitShowDebugBordersPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::showRepaintCounter(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitShowRepaintCounterPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setShowRepaintCounter(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitShowRepaintCounterPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::setCustomDragCursorsEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitCustomDragCursorsEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::customDragCursorsEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitCustomDragCursorsEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setDNSPrefetchingEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitDNSPrefetchingEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::isDNSPrefetchingEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitDNSPrefetchingEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::memoryInfoEnabled(BOOL* enabled)
+{
+    *enabled = boolValueForKey(CFSTR(WebKitMemoryInfoEnabledPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setMemoryInfoEnabled(BOOL enabled)
+{
+    setBoolValue(CFSTR(WebKitMemoryInfoEnabledPreferenceKey), enabled);
+    return S_OK;
+}
+
+HRESULT WebPreferences::isFullScreenEnabled(BOOL* enabled)
+{
+#if ENABLE(FULLSCREEN_API)
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitFullScreenEnabledPreferenceKey));
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::setFullScreenEnabled(BOOL enabled)
+{
+#if ENABLE(FULLSCREEN_API)
+    setBoolValue(CFSTR(WebKitFullScreenEnabledPreferenceKey), enabled);
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::avFoundationEnabled(BOOL* enabled)
+{
+#if USE(AVFOUNDATION)
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitAVFoundationEnabledPreferenceKey));
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::setAVFoundationEnabled(BOOL enabled)
+{
+#if USE(AVFOUNDATION)
+    setBoolValue(CFSTR(WebKitAVFoundationEnabledPreferenceKey), enabled);
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::showsToolTipOverTruncatedText(BOOL* showsToolTip)
+{
+    if (!showsToolTip)
+        return E_POINTER;
+
+    *showsToolTip = boolValueForKey(CFSTR(WebKitShowsToolTipOverTruncatedTextPreferenceKey));
+    return S_OK;
+}
+
+HRESULT WebPreferences::setShowsToolTipOverTruncatedText(BOOL showsToolTip)
+{
+    setBoolValue(CFSTR(WebKitShowsToolTipOverTruncatedTextPreferenceKey), showsToolTip);
+    return S_OK;
+}
+
+void WebPreferences::willAddToWebView()
+{
+    ++m_numWebViews;
+}
+
+void WebPreferences::didRemoveFromWebView()
+{
+    ASSERT(m_numWebViews);
+    if (--m_numWebViews == 0) {
+        IWebNotificationCenter* nc = WebNotificationCenter::defaultCenterInternal();
+        nc->postNotificationName(webPreferencesRemovedNotification(), static_cast<IWebPreferences*>(this), 0);
+    }
+}
+
+HRESULT WebPreferences::shouldDisplaySubtitles(BOOL* enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitShouldDisplaySubtitlesPreferenceKey));
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::setShouldDisplaySubtitles(BOOL enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    setBoolValue(CFSTR(WebKitShouldDisplaySubtitlesPreferenceKey), enabled);
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::shouldDisplayCaptions(BOOL* enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitShouldDisplayCaptionsPreferenceKey));
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::setShouldDisplayCaptions(BOOL enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    setBoolValue(CFSTR(WebKitShouldDisplayCaptionsPreferenceKey), enabled);
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::shouldDisplayTextDescriptions(BOOL* enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    if (!enabled)
+        return E_POINTER;
+
+    *enabled = boolValueForKey(CFSTR(WebKitShouldDisplayTextDescriptionsPreferenceKey));
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}
+
+HRESULT WebPreferences::setShouldDisplayTextDescriptions(BOOL enabled)
+{
+#if ENABLE(VIDEO_TRACK)
+    setBoolValue(CFSTR(WebKitShouldDisplayTextDescriptionsPreferenceKey), enabled);
+    return S_OK;
+#else
+    return E_NOTIMPL;
+#endif
+}