webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 559 insertions, 249 deletions

diff --git a/Source/WebCore/testing/InternalSettings.cpp b/Source/WebCore/testing/InternalSettings.cpp
index dc7da1e92..fadddbf56 100644
--- a/Source/WebCore/testing/InternalSettings.cpp
+++ b/Source/WebCore/testing/InternalSettings.cpp
@@ -45,129 +45,160 @@
 #include "ColorChooser.h"
 #endif
 
-#define InternalSettingsGuardForSettingsReturn(returnValue) \
-    if (!settings()) { \
-        ec = INVALID_ACCESS_ERR; \
-        return returnValue; \
-    }
-
-#define InternalSettingsGuardForSettings()  \
-    if (!settings()) { \
-        ec = INVALID_ACCESS_ERR; \
-        return; \
-    }
-
-#define InternalSettingsGuardForPage() \
-    if (!page()) { \
-        ec = INVALID_ACCESS_ERR; \
-        return; \
-    }
+#if USE(SOUP)
+#include "SoupNetworkSession.h"
+#endif
 
 namespace WebCore {
 
 InternalSettings::Backup::Backup(Settings& settings)
-    : m_originalCSSExclusionsEnabled(RuntimeEnabledFeatures::sharedFeatures().cssExclusionsEnabled())
-    , m_originalCSSShapesEnabled(RuntimeEnabledFeatures::sharedFeatures().cssShapesEnabled())
-#if ENABLE(SHADOW_DOM)
-    , m_originalShadowDOMEnabled(RuntimeEnabledFeatures::sharedFeatures().shadowDOMEnabled())
-    , m_originalAuthorShadowDOMForAnyElementEnabled(RuntimeEnabledFeatures::sharedFeatures().authorShadowDOMForAnyElementEnabled())
-#endif
-    , m_originalEditingBehavior(settings.editingBehaviorType())
+    : m_originalEditingBehavior(settings.editingBehaviorType())
 #if ENABLE(TEXT_AUTOSIZING)
     , m_originalTextAutosizingEnabled(settings.textAutosizingEnabled())
     , m_originalTextAutosizingWindowSizeOverride(settings.textAutosizingWindowSizeOverride())
-    , m_originalTextAutosizingFontScaleFactor(settings.textAutosizingFontScaleFactor())
 #endif
     , m_originalMediaTypeOverride(settings.mediaTypeOverride())
     , m_originalCanvasUsesAcceleratedDrawing(settings.canvasUsesAcceleratedDrawing())
     , m_originalMockScrollbarsEnabled(settings.mockScrollbarsEnabled())
-    , m_langAttributeAwareFormControlUIEnabled(RuntimeEnabledFeatures::sharedFeatures().langAttributeAwareFormControlUIEnabled())
     , m_imagesEnabled(settings.areImagesEnabled())
-    , m_minimumTimerInterval(settings.minDOMTimerInterval())
+    , m_preferMIMETypeForImages(settings.preferMIMETypeForImages())
+    , m_minimumTimerInterval(settings.minimumDOMTimerInterval())
 #if ENABLE(VIDEO_TRACK)
     , m_shouldDisplaySubtitles(settings.shouldDisplaySubtitles())
     , m_shouldDisplayCaptions(settings.shouldDisplayCaptions())
     , m_shouldDisplayTextDescriptions(settings.shouldDisplayTextDescriptions())
 #endif
     , m_defaultVideoPosterURL(settings.defaultVideoPosterURL())
+    , m_forcePendingWebGLPolicy(settings.isForcePendingWebGLPolicy())
     , m_originalTimeWithoutMouseMovementBeforeHidingControls(settings.timeWithoutMouseMovementBeforeHidingControls())
     , m_useLegacyBackgroundSizeShorthandBehavior(settings.useLegacyBackgroundSizeShorthandBehavior())
     , m_autoscrollForDragAndDropEnabled(settings.autoscrollForDragAndDropEnabled())
-    , m_pluginReplacementEnabled(RuntimeEnabledFeatures::sharedFeatures().pluginReplacementEnabled())
+    , m_quickTimePluginReplacementEnabled(settings.quickTimePluginReplacementEnabled())
+    , m_youTubeFlashPluginReplacementEnabled(settings.youTubeFlashPluginReplacementEnabled())
+    , m_shouldConvertPositionStyleOnCopy(settings.shouldConvertPositionStyleOnCopy())
+    , m_fontFallbackPrefersPictographs(settings.fontFallbackPrefersPictographs())
+    , m_webFontsAlwaysFallBack(settings.webFontsAlwaysFallBack())
+    , m_backgroundShouldExtendBeyondPage(settings.backgroundShouldExtendBeyondPage())
+    , m_storageBlockingPolicy(settings.storageBlockingPolicy())
+    , m_scrollingTreeIncludesFrames(settings.scrollingTreeIncludesFrames())
+#if ENABLE(TOUCH_EVENTS)
+    , m_touchEventEmulationEnabled(settings.isTouchEventEmulationEnabled())
+#endif
+#if ENABLE(WIRELESS_PLAYBACK_TARGET)
+    , m_allowsAirPlayForMediaPlayback(settings.allowsAirPlayForMediaPlayback())
+#endif
+    , m_allowsInlineMediaPlayback(settings.allowsInlineMediaPlayback())
+    , m_allowsInlineMediaPlaybackAfterFullscreen(settings.allowsInlineMediaPlaybackAfterFullscreen())
+    , m_inlineMediaPlaybackRequiresPlaysInlineAttribute(settings.inlineMediaPlaybackRequiresPlaysInlineAttribute())
+    , m_deferredCSSParserEnabled(settings.deferredCSSParserEnabled())
+    , m_inputEventsEnabled(settings.inputEventsEnabled())
+    , m_userInterfaceDirectionPolicy(settings.userInterfaceDirectionPolicy())
+    , m_systemLayoutDirection(settings.systemLayoutDirection())
+    , m_pdfImageCachingPolicy(settings.pdfImageCachingPolicy())
+    , m_forcedColorsAreInvertedAccessibilityValue(settings.forcedColorsAreInvertedAccessibilityValue())
+    , m_forcedDisplayIsMonochromeAccessibilityValue(settings.forcedDisplayIsMonochromeAccessibilityValue())
+    , m_forcedPrefersReducedMotionAccessibilityValue(settings.forcedPrefersReducedMotionAccessibilityValue())
+#if ENABLE(INDEXED_DATABASE_IN_WORKERS)
+    , m_indexedDBWorkersEnabled(RuntimeEnabledFeatures::sharedFeatures().indexedDBWorkersEnabled())
+#endif
+    , m_cssGridLayoutEnabled(RuntimeEnabledFeatures::sharedFeatures().isCSSGridLayoutEnabled())
+#if ENABLE(WEBGL2)
+    , m_webGL2Enabled(RuntimeEnabledFeatures::sharedFeatures().webGL2Enabled())
+#endif
 {
 }
 
 void InternalSettings::Backup::restoreTo(Settings& settings)
 {
-    RuntimeEnabledFeatures::sharedFeatures().setCSSExclusionsEnabled(m_originalCSSExclusionsEnabled);
-    RuntimeEnabledFeatures::sharedFeatures().setCSSShapesEnabled(m_originalCSSShapesEnabled);
-#if ENABLE(SHADOW_DOM)
-    RuntimeEnabledFeatures::sharedFeatures().setShadowDOMEnabled(m_originalShadowDOMEnabled);
-    RuntimeEnabledFeatures::sharedFeatures().setAuthorShadowDOMForAnyElementEnabled(m_originalAuthorShadowDOMForAnyElementEnabled);
-#endif
     settings.setEditingBehaviorType(m_originalEditingBehavior);
 
-    for (auto iter = m_standardFontFamilies.begin(); iter != m_standardFontFamilies.end(); ++iter)
-        settings.setStandardFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& standardFont : m_standardFontFamilies)
+        settings.setStandardFontFamily(standardFont.value, static_cast<UScriptCode>(standardFont.key));
     m_standardFontFamilies.clear();
 
-    for (auto iter = m_fixedFontFamilies.begin(); iter != m_fixedFontFamilies.end(); ++iter)
-        settings.setFixedFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& fixedFont : m_fixedFontFamilies)
+        settings.setFixedFontFamily(fixedFont.value, static_cast<UScriptCode>(fixedFont.key));
     m_fixedFontFamilies.clear();
 
-    for (auto iter = m_serifFontFamilies.begin(); iter != m_serifFontFamilies.end(); ++iter)
-        settings.setSerifFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& serifFont : m_serifFontFamilies)
+        settings.setSerifFontFamily(serifFont.value, static_cast<UScriptCode>(serifFont.key));
     m_serifFontFamilies.clear();
 
-    for (auto iter = m_sansSerifFontFamilies.begin(); iter != m_sansSerifFontFamilies.end(); ++iter)
-        settings.setSansSerifFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& sansSerifFont : m_sansSerifFontFamilies)
+        settings.setSansSerifFontFamily(sansSerifFont.value, static_cast<UScriptCode>(sansSerifFont.key));
     m_sansSerifFontFamilies.clear();
 
-    for (auto iter = m_cursiveFontFamilies.begin(); iter != m_cursiveFontFamilies.end(); ++iter)
-        settings.setCursiveFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& cursiveFont : m_cursiveFontFamilies)
+        settings.setCursiveFontFamily(cursiveFont.value, static_cast<UScriptCode>(cursiveFont.key));
     m_cursiveFontFamilies.clear();
 
-    for (auto iter = m_fantasyFontFamilies.begin(); iter != m_fantasyFontFamilies.end(); ++iter)
-        settings.setFantasyFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& fantasyFont : m_fantasyFontFamilies)
+        settings.setFantasyFontFamily(fantasyFont.value, static_cast<UScriptCode>(fantasyFont.key));
     m_fantasyFontFamilies.clear();
 
-    for (auto iter = m_pictographFontFamilies.begin(); iter != m_pictographFontFamilies.end(); ++iter)
-        settings.setPictographFontFamily(iter->value, static_cast<UScriptCode>(iter->key));
+    for (const auto& pictographFont : m_pictographFontFamilies)
+        settings.setPictographFontFamily(pictographFont.value, static_cast<UScriptCode>(pictographFont.key));
     m_pictographFontFamilies.clear();
 
 #if ENABLE(TEXT_AUTOSIZING)
     settings.setTextAutosizingEnabled(m_originalTextAutosizingEnabled);
     settings.setTextAutosizingWindowSizeOverride(m_originalTextAutosizingWindowSizeOverride);
-    settings.setTextAutosizingFontScaleFactor(m_originalTextAutosizingFontScaleFactor);
 #endif
     settings.setMediaTypeOverride(m_originalMediaTypeOverride);
     settings.setCanvasUsesAcceleratedDrawing(m_originalCanvasUsesAcceleratedDrawing);
-    settings.setMockScrollbarsEnabled(m_originalMockScrollbarsEnabled);
-    RuntimeEnabledFeatures::sharedFeatures().setLangAttributeAwareFormControlUIEnabled(m_langAttributeAwareFormControlUIEnabled);
     settings.setImagesEnabled(m_imagesEnabled);
-    settings.setMinDOMTimerInterval(m_minimumTimerInterval);
+    settings.setPreferMIMETypeForImages(m_preferMIMETypeForImages);
+    settings.setMinimumDOMTimerInterval(m_minimumTimerInterval);
 #if ENABLE(VIDEO_TRACK)
     settings.setShouldDisplaySubtitles(m_shouldDisplaySubtitles);
     settings.setShouldDisplayCaptions(m_shouldDisplayCaptions);
     settings.setShouldDisplayTextDescriptions(m_shouldDisplayTextDescriptions);
 #endif
     settings.setDefaultVideoPosterURL(m_defaultVideoPosterURL);
+    settings.setForcePendingWebGLPolicy(m_forcePendingWebGLPolicy);
     settings.setTimeWithoutMouseMovementBeforeHidingControls(m_originalTimeWithoutMouseMovementBeforeHidingControls);
     settings.setUseLegacyBackgroundSizeShorthandBehavior(m_useLegacyBackgroundSizeShorthandBehavior);
     settings.setAutoscrollForDragAndDropEnabled(m_autoscrollForDragAndDropEnabled);
-    RuntimeEnabledFeatures::sharedFeatures().setPluginReplacementEnabled(m_pluginReplacementEnabled);
+    settings.setShouldConvertPositionStyleOnCopy(m_shouldConvertPositionStyleOnCopy);
+    settings.setFontFallbackPrefersPictographs(m_fontFallbackPrefersPictographs);
+    settings.setWebFontsAlwaysFallBack(m_webFontsAlwaysFallBack);
+    settings.setBackgroundShouldExtendBeyondPage(m_backgroundShouldExtendBeyondPage);
+    settings.setStorageBlockingPolicy(m_storageBlockingPolicy);
+    settings.setScrollingTreeIncludesFrames(m_scrollingTreeIncludesFrames);
+#if ENABLE(TOUCH_EVENTS)
+    settings.setTouchEventEmulationEnabled(m_touchEventEmulationEnabled);
+#endif
+    settings.setAllowsInlineMediaPlayback(m_allowsInlineMediaPlayback);
+    settings.setAllowsInlineMediaPlaybackAfterFullscreen(m_allowsInlineMediaPlaybackAfterFullscreen);
+    settings.setInlineMediaPlaybackRequiresPlaysInlineAttribute(m_inlineMediaPlaybackRequiresPlaysInlineAttribute);
+    settings.setQuickTimePluginReplacementEnabled(m_quickTimePluginReplacementEnabled);
+    settings.setYouTubeFlashPluginReplacementEnabled(m_youTubeFlashPluginReplacementEnabled);
+    settings.setDeferredCSSParserEnabled(m_deferredCSSParserEnabled);
+    settings.setInputEventsEnabled(m_inputEventsEnabled);
+    settings.setUserInterfaceDirectionPolicy(m_userInterfaceDirectionPolicy);
+    settings.setSystemLayoutDirection(m_systemLayoutDirection);
+    settings.setPdfImageCachingPolicy(m_pdfImageCachingPolicy);
+    settings.setForcedColorsAreInvertedAccessibilityValue(m_forcedColorsAreInvertedAccessibilityValue);
+    settings.setForcedDisplayIsMonochromeAccessibilityValue(m_forcedDisplayIsMonochromeAccessibilityValue);
+    settings.setForcedPrefersReducedMotionAccessibilityValue(m_forcedPrefersReducedMotionAccessibilityValue);
+    Settings::setAllowsAnySSLCertificate(false);
+
+#if ENABLE(INDEXED_DATABASE_IN_WORKERS)
+    RuntimeEnabledFeatures::sharedFeatures().setIndexedDBWorkersEnabled(m_indexedDBWorkersEnabled);
+#endif
+    RuntimeEnabledFeatures::sharedFeatures().setCSSGridLayoutEnabled(m_cssGridLayoutEnabled);
+#if ENABLE(WEBGL2)
+    RuntimeEnabledFeatures::sharedFeatures().setWebGL2Enabled(m_webGL2Enabled);
+#endif
 }
 
-// We can't use RefCountedSupplement because that would try to make InternalSettings RefCounted
-// and InternalSettings is already RefCounted via its base class, InternalSettingsGenerated.
-// Instead, we manually make InternalSettings supplement Page.
 class InternalSettingsWrapper : public Supplement<Page> {
 public:
     explicit InternalSettingsWrapper(Page* page)
         : m_internalSettings(InternalSettings::create(page)) { }
     virtual ~InternalSettingsWrapper() { m_internalSettings->hostDestroyed(); }
 #if !ASSERT_DISABLED
-    virtual bool isRefCountedWrapper() const override { return true; }
+    bool isRefCountedWrapper() const override { return true; }
 #endif
     InternalSettings* internalSettings() const { return m_internalSettings.get(); }
 
@@ -183,12 +214,13 @@ const char* InternalSettings::supplementName()
 InternalSettings* InternalSettings::from(Page* page)
 {
     if (!Supplement<Page>::from(page, supplementName()))
-        Supplement<Page>::provideTo(page, supplementName(), adoptPtr(new InternalSettingsWrapper(page)));
+        Supplement<Page>::provideTo(page, supplementName(), std::make_unique<InternalSettingsWrapper>(page));
     return static_cast<InternalSettingsWrapper*>(Supplement<Page>::from(page, supplementName()))->internalSettings();
 }
 
-InternalSettings::~InternalSettings()
+void InternalSettings::hostDestroyed()
 {
+    m_page = nullptr;
 }
 
 InternalSettings::InternalSettings(Page* page)
@@ -196,335 +228,613 @@ InternalSettings::InternalSettings(Page* page)
     , m_page(page)
     , m_backup(page->settings())
 {
+#if ENABLE(WIRELESS_PLAYBACK_TARGET)
+    setAllowsAirPlayForMediaPlayback(false);
+#endif
+#if ENABLE(MEDIA_STREAM)
+    setMediaCaptureRequiresSecureConnection(false);
+#endif
 }
 
-void InternalSettings::resetToConsistentState()
-{
-    page()->setPageScaleFactor(1, IntPoint(0, 0));
-    page()->setCanStartMedia(true);
-
-    m_backup.restoreTo(*settings());
-    m_backup = Backup(*settings());
-
-    InternalSettingsGenerated::resetToConsistentState();
-}
-
-Settings* InternalSettings::settings() const
+Ref<InternalSettings> InternalSettings::create(Page* page)
 {
-    if (!page())
-        return 0;
-    return &page()->settings();
+    return adoptRef(*new InternalSettings(page));
 }
 
-void InternalSettings::setMockScrollbarsEnabled(bool enabled, ExceptionCode& ec)
+void InternalSettings::resetToConsistentState()
 {
-    InternalSettingsGuardForSettings();
-    settings()->setMockScrollbarsEnabled(enabled);
-}
+    m_page->setPageScaleFactor(1, { 0, 0 });
+    m_page->mainFrame().setPageAndTextZoomFactors(1, 1);
+    m_page->setCanStartMedia(true);
 
-static bool urlIsWhitelistedForSetShadowDOMEnabled(const String& url)
-{
-    // This check is just for preventing fuzzers from crashing because of unintended API calls.
-    // You can list your test if needed.
-    return notFound != url.find("fast/dom/shadow/content-shadow-unknown.html")
-        || notFound != url.find("fast/dom/shadow/insertion-points-with-shadow-disabled.html");
-}
+    settings().setForcePendingWebGLPolicy(false);
+#if ENABLE(WIRELESS_PLAYBACK_TARGET)
+    settings().setAllowsAirPlayForMediaPlayback(false);
+#endif
+#if ENABLE(MEDIA_STREAM)
+    setMediaCaptureRequiresSecureConnection(false);
+#endif
 
-void InternalSettings::setShadowDOMEnabled(bool enabled, ExceptionCode& ec)
-{
-    if (!urlIsWhitelistedForSetShadowDOMEnabled(page()->mainFrame().document()->url().string())) {
-        ec = INVALID_ACCESS_ERR;
-        return;
-    }
+    m_backup.restoreTo(settings());
+    m_backup = Backup { settings() };
 
-#if ENABLE(SHADOW_DOM)
-    RuntimeEnabledFeatures::sharedFeatures().setShadowDOMEnabled(enabled);
-#else
-    // Even SHADOW_DOM is off, InternalSettings allows setShadowDOMEnabled(false) to
-    // have broader test coverage. But it cannot be setShadowDOMEnabled(true).
-    if (enabled)
-        ec = INVALID_ACCESS_ERR;
-#endif
+    InternalSettingsGenerated::resetToConsistentState();
 }
 
-void InternalSettings::setAuthorShadowDOMForAnyElementEnabled(bool isEnabled)
+Settings& InternalSettings::settings() const
 {
-#if ENABLE(SHADOW_DOM)
-    RuntimeEnabledFeatures::sharedFeatures().setAuthorShadowDOMForAnyElementEnabled(isEnabled);
-#else
-    UNUSED_PARAM(isEnabled);
-#endif
+    ASSERT(m_page);
+    return m_page->settings();
 }
 
-void InternalSettings::setTouchEventEmulationEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setTouchEventEmulationEnabled(bool enabled)
 {
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
 #if ENABLE(TOUCH_EVENTS)
-    InternalSettingsGuardForSettings();
-    settings()->setTouchEventEmulationEnabled(enabled);
+    settings().setTouchEventEmulationEnabled(enabled);
 #else
     UNUSED_PARAM(enabled);
-    UNUSED_PARAM(ec);
 #endif
+    return { };
 }
 
-void InternalSettings::setStandardFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setStandardFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_standardFontFamilies.add(code, settings()->standardFontFamily(code));
-    settings()->setStandardFontFamily(family, code);
+        return { };
+    m_backup.m_standardFontFamilies.add(code, settings().standardFontFamily(code));
+    settings().setStandardFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setSerifFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setSerifFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_serifFontFamilies.add(code, settings()->serifFontFamily(code));
-    settings()->setSerifFontFamily(family, code);
+        return { };
+    m_backup.m_serifFontFamilies.add(code, settings().serifFontFamily(code));
+    settings().setSerifFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setSansSerifFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setSansSerifFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_sansSerifFontFamilies.add(code, settings()->sansSerifFontFamily(code));
-    settings()->setSansSerifFontFamily(family, code);
+        return { };
+    m_backup.m_sansSerifFontFamilies.add(code, settings().sansSerifFontFamily(code));
+    settings().setSansSerifFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setFixedFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setFixedFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_fixedFontFamilies.add(code, settings()->fixedFontFamily(code));
-    settings()->setFixedFontFamily(family, code);
+        return { };
+    m_backup.m_fixedFontFamilies.add(code, settings().fixedFontFamily(code));
+    settings().setFixedFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setCursiveFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setCursiveFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_cursiveFontFamilies.add(code, settings()->cursiveFontFamily(code));
-    settings()->setCursiveFontFamily(family, code);
+        return { };
+    m_backup.m_cursiveFontFamilies.add(code, settings().cursiveFontFamily(code));
+    settings().setCursiveFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setFantasyFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setFantasyFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_fantasyFontFamilies.add(code, settings()->fantasyFontFamily(code));
-    settings()->setFantasyFontFamily(family, code);
+        return { };
+    m_backup.m_fantasyFontFamilies.add(code, settings().fantasyFontFamily(code));
+    settings().setFantasyFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setPictographFontFamily(const String& family, const String& script, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setPictographFontFamily(const String& family, const String& script)
 {
-    InternalSettingsGuardForSettings();
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     UScriptCode code = scriptNameToCode(script);
     if (code == USCRIPT_INVALID_CODE)
-        return;
-    m_backup.m_pictographFontFamilies.add(code, settings()->pictographFontFamily(code));
-    settings()->setPictographFontFamily(family, code);
+        return { };
+    m_backup.m_pictographFontFamilies.add(code, settings().pictographFontFamily(code));
+    settings().setPictographFontFamily(family, code);
+    return { };
 }
 
-void InternalSettings::setTextAutosizingEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setTextAutosizingEnabled(bool enabled)
 {
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
 #if ENABLE(TEXT_AUTOSIZING)
-    InternalSettingsGuardForSettings();
-    settings()->setTextAutosizingEnabled(enabled);
+    settings().setTextAutosizingEnabled(enabled);
 #else
     UNUSED_PARAM(enabled);
-    UNUSED_PARAM(ec);
 #endif
+    return { };
 }
 
-void InternalSettings::setTextAutosizingWindowSizeOverride(int width, int height, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setTextAutosizingWindowSizeOverride(int width, int height)
 {
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
 #if ENABLE(TEXT_AUTOSIZING)
-    InternalSettingsGuardForSettings();
-    settings()->setTextAutosizingWindowSizeOverride(IntSize(width, height));
+    settings().setTextAutosizingWindowSizeOverride(IntSize(width, height));
 #else
     UNUSED_PARAM(width);
     UNUSED_PARAM(height);
-    UNUSED_PARAM(ec);
 #endif
+    return { };
 }
 
-void InternalSettings::setMediaTypeOverride(const String& mediaType, ExceptionCode& ec)
-{
-    InternalSettingsGuardForSettings();
-    settings()->setMediaTypeOverride(mediaType);
-}
-
-void InternalSettings::setTextAutosizingFontScaleFactor(float fontScaleFactor, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setMediaTypeOverride(const String& mediaType)
 {
-#if ENABLE(TEXT_AUTOSIZING)
-    InternalSettingsGuardForSettings();
-    settings()->setTextAutosizingFontScaleFactor(fontScaleFactor);
-#else
-    UNUSED_PARAM(fontScaleFactor);
-    UNUSED_PARAM(ec);
-#endif
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setMediaTypeOverride(mediaType);
+    return { };
 }
 
-void InternalSettings::setCSSExclusionsEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setCanStartMedia(bool enabled)
 {
-    UNUSED_PARAM(ec);
-    RuntimeEnabledFeatures::sharedFeatures().setCSSExclusionsEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    m_page->setCanStartMedia(enabled);
+    return { };
 }
 
-void InternalSettings::setCSSShapesEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setAllowsAirPlayForMediaPlayback(bool allows)
 {
-    UNUSED_PARAM(ec);
-    RuntimeEnabledFeatures::sharedFeatures().setCSSShapesEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+#if ENABLE(WIRELESS_PLAYBACK_TARGET)
+    settings().setAllowsAirPlayForMediaPlayback(allows);
+#else
+    UNUSED_PARAM(allows);
+#endif
+    return { };
 }
 
-void InternalSettings::setCanStartMedia(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setMediaCaptureRequiresSecureConnection(bool requires)
 {
-    InternalSettingsGuardForSettings();
-    m_page->setCanStartMedia(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+#if ENABLE(MEDIA_STREAM)
+    settings().setMediaCaptureRequiresSecureConnection(requires);
+#else
+    UNUSED_PARAM(requires);
+#endif
+    return { };
 }
 
-void InternalSettings::setEditingBehavior(const String& editingBehavior, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setEditingBehavior(const String& editingBehavior)
 {
-    InternalSettingsGuardForSettings();
-    if (equalIgnoringCase(editingBehavior, "win"))
-        settings()->setEditingBehaviorType(EditingWindowsBehavior);
-    else if (equalIgnoringCase(editingBehavior, "mac"))
-        settings()->setEditingBehaviorType(EditingMacBehavior);
-    else if (equalIgnoringCase(editingBehavior, "unix"))
-        settings()->setEditingBehaviorType(EditingUnixBehavior);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    if (equalLettersIgnoringASCIICase(editingBehavior, "win"))
+        settings().setEditingBehaviorType(EditingWindowsBehavior);
+    else if (equalLettersIgnoringASCIICase(editingBehavior, "mac"))
+        settings().setEditingBehaviorType(EditingMacBehavior);
+    else if (equalLettersIgnoringASCIICase(editingBehavior, "unix"))
+        settings().setEditingBehaviorType(EditingUnixBehavior);
+    else if (equalLettersIgnoringASCIICase(editingBehavior, "ios"))
+        settings().setEditingBehaviorType(EditingIOSBehavior);
     else
-        ec = SYNTAX_ERR;
+        return Exception { SYNTAX_ERR };
+    return { };
 }
 
-void InternalSettings::setShouldDisplayTrackKind(const String& kind, bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setShouldDisplayTrackKind(const String& kind, bool enabled)
 {
-    InternalSettingsGuardForSettings();
-
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
 #if ENABLE(VIDEO_TRACK)
-    if (!page())
-        return;
-    CaptionUserPreferences* captionPreferences = page()->group().captionPreferences();
-
-    if (equalIgnoringCase(kind, "Subtitles"))
-        captionPreferences->setUserPrefersSubtitles(enabled);
-    else if (equalIgnoringCase(kind, "Captions"))
-        captionPreferences->setUserPrefersCaptions(enabled);
-    else if (equalIgnoringCase(kind, "TextDescriptions"))
-        captionPreferences->setUserPrefersTextDescriptions(enabled);
+    auto& captionPreferences = m_page->group().captionPreferences();
+    if (equalLettersIgnoringASCIICase(kind, "subtitles"))
+        captionPreferences.setUserPrefersSubtitles(enabled);
+    else if (equalLettersIgnoringASCIICase(kind, "captions"))
+        captionPreferences.setUserPrefersCaptions(enabled);
+    else if (equalLettersIgnoringASCIICase(kind, "textdescriptions"))
+        captionPreferences.setUserPrefersTextDescriptions(enabled);
     else
-        ec = SYNTAX_ERR;
+        return Exception { SYNTAX_ERR };
 #else
     UNUSED_PARAM(kind);
     UNUSED_PARAM(enabled);
 #endif
+    return { };
 }
 
-bool InternalSettings::shouldDisplayTrackKind(const String& kind, ExceptionCode& ec)
+ExceptionOr<bool> InternalSettings::shouldDisplayTrackKind(const String& kind)
 {
-    InternalSettingsGuardForSettingsReturn(false);
-
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
 #if ENABLE(VIDEO_TRACK)
-    if (!page())
-        return false;
-    CaptionUserPreferences* captionPreferences = page()->group().captionPreferences();
-
-    if (equalIgnoringCase(kind, "Subtitles"))
-        return captionPreferences->userPrefersSubtitles();
-    if (equalIgnoringCase(kind, "Captions"))
-        return captionPreferences->userPrefersCaptions();
-    if (equalIgnoringCase(kind, "TextDescriptions"))
-        return captionPreferences->userPrefersTextDescriptions();
-
-    ec = SYNTAX_ERR;
-    return false;
+    auto& captionPreferences = m_page->group().captionPreferences();
+    if (equalLettersIgnoringASCIICase(kind, "subtitles"))
+        return captionPreferences.userPrefersSubtitles();
+    if (equalLettersIgnoringASCIICase(kind, "captions"))
+        return captionPreferences.userPrefersCaptions();
+    if (equalLettersIgnoringASCIICase(kind, "textdescriptions"))
+        return captionPreferences.userPrefersTextDescriptions();
+
+    return Exception { SYNTAX_ERR };
 #else
     UNUSED_PARAM(kind);
     return false;
 #endif
 }
 
-void InternalSettings::setStorageBlockingPolicy(const String& mode, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setStorageBlockingPolicy(const String& mode)
 {
-    InternalSettingsGuardForSettings();
-
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
     if (mode == "AllowAll")
-        settings()->setStorageBlockingPolicy(SecurityOrigin::AllowAllStorage);
+        settings().setStorageBlockingPolicy(SecurityOrigin::AllowAllStorage);
     else if (mode == "BlockThirdParty")
-        settings()->setStorageBlockingPolicy(SecurityOrigin::BlockThirdPartyStorage);
+        settings().setStorageBlockingPolicy(SecurityOrigin::BlockThirdPartyStorage);
     else if (mode == "BlockAll")
-        settings()->setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
+        settings().setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
+    else
+        return Exception { SYNTAX_ERR };
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setPreferMIMETypeForImages(bool preferMIMETypeForImages)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setPreferMIMETypeForImages(preferMIMETypeForImages);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setImagesEnabled(bool enabled)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setImagesEnabled(enabled);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setPDFImageCachingPolicy(const String& policy)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    if (equalLettersIgnoringASCIICase(policy, "disabled"))
+        settings().setPdfImageCachingPolicy(PDFImageCachingDisabled);
+    else if (equalLettersIgnoringASCIICase(policy, "belowmemorylimit"))
+        settings().setPdfImageCachingPolicy(PDFImageCachingBelowMemoryLimit);
+    else if (equalLettersIgnoringASCIICase(policy, "clipboundsonly"))
+        settings().setPdfImageCachingPolicy(PDFImageCachingClipBoundsOnly);
+    else if (equalLettersIgnoringASCIICase(policy, "enabled"))
+        settings().setPdfImageCachingPolicy(PDFImageCachingEnabled);
     else
-        ec = SYNTAX_ERR;
+        return Exception { SYNTAX_ERR };
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setMinimumTimerInterval(double intervalInSeconds)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setMinimumDOMTimerInterval(std::chrono::milliseconds((std::chrono::milliseconds::rep)(intervalInSeconds * 1000)));
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setDefaultVideoPosterURL(const String& url)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setDefaultVideoPosterURL(url);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setForcePendingWebGLPolicy(bool forced)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setForcePendingWebGLPolicy(forced);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setTimeWithoutMouseMovementBeforeHidingControls(double time)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setTimeWithoutMouseMovementBeforeHidingControls(time);
+    return { };
 }
 
-void InternalSettings::setLangAttributeAwareFormControlUIEnabled(bool enabled)
+ExceptionOr<void> InternalSettings::setUseLegacyBackgroundSizeShorthandBehavior(bool enabled)
 {
-    RuntimeEnabledFeatures::sharedFeatures().setLangAttributeAwareFormControlUIEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setUseLegacyBackgroundSizeShorthandBehavior(enabled);
+    return { };
 }
 
-void InternalSettings::setImagesEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setAutoscrollForDragAndDropEnabled(bool enabled)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setImagesEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setAutoscrollForDragAndDropEnabled(enabled);
+    return { };
 }
 
-void InternalSettings::setMinimumTimerInterval(double intervalInSeconds, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setFontFallbackPrefersPictographs(bool preferPictographs)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setMinDOMTimerInterval(intervalInSeconds);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setFontFallbackPrefersPictographs(preferPictographs);
+    return { };
 }
 
-void InternalSettings::setDefaultVideoPosterURL(const String& url, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setWebFontsAlwaysFallBack(bool enable)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setDefaultVideoPosterURL(url);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setWebFontsAlwaysFallBack(enable);
+    return { };
 }
 
-void InternalSettings::setTimeWithoutMouseMovementBeforeHidingControls(double time, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setQuickTimePluginReplacementEnabled(bool enabled)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setTimeWithoutMouseMovementBeforeHidingControls(time);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setQuickTimePluginReplacementEnabled(enabled);
+    return { };
 }
 
-void InternalSettings::setUseLegacyBackgroundSizeShorthandBehavior(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setYouTubeFlashPluginReplacementEnabled(bool enabled)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setUseLegacyBackgroundSizeShorthandBehavior(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setYouTubeFlashPluginReplacementEnabled(enabled);
+    return { };
 }
 
-void InternalSettings::setAutoscrollForDragAndDropEnabled(bool enabled, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setBackgroundShouldExtendBeyondPage(bool hasExtendedBackground)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setAutoscrollForDragAndDropEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setBackgroundShouldExtendBeyondPage(hasExtendedBackground);
+    return { };
 }
 
-void InternalSettings::setFontFallbackPrefersPictographs(bool preferPictographs, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setShouldConvertPositionStyleOnCopy(bool convert)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setFontFallbackPrefersPictographs(preferPictographs);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setShouldConvertPositionStyleOnCopy(convert);
+    return { };
 }
 
-void InternalSettings::setPluginReplacementEnabled(bool enabled)
+ExceptionOr<void> InternalSettings::setScrollingTreeIncludesFrames(bool enabled)
 {
-    RuntimeEnabledFeatures::sharedFeatures().setPluginReplacementEnabled(enabled);
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setScrollingTreeIncludesFrames(enabled);
+    return { };
 }
 
-void InternalSettings::setBackgroundShouldExtendBeyondPage(bool hasExtendedBackground, ExceptionCode& ec)
+ExceptionOr<void> InternalSettings::setAllowUnclampedScrollPosition(bool allowUnclamped)
 {
-    InternalSettingsGuardForSettings();
-    settings()->setBackgroundShouldExtendBeyondPage(hasExtendedBackground);
+    if (!m_page || !m_page->mainFrame().view())
+        return Exception { INVALID_ACCESS_ERR };
+
+    m_page->mainFrame().view()->setAllowsUnclampedScrollPositionForTesting(allowUnclamped);
+    return { };
 }
 
+ExceptionOr<void> InternalSettings::setAllowsInlineMediaPlayback(bool allows)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setAllowsInlineMediaPlayback(allows);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setAllowsInlineMediaPlaybackAfterFullscreen(bool allows)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setAllowsInlineMediaPlaybackAfterFullscreen(allows);
+    return { };
+}
+
+ExceptionOr<void> InternalSettings::setInlineMediaPlaybackRequiresPlaysInlineAttribute(bool requires)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setInlineMediaPlaybackRequiresPlaysInlineAttribute(requires);
+    return { };
+}
+
+void InternalSettings::setIndexedDBWorkersEnabled(bool enabled)
+{
+#if ENABLE(INDEXED_DATABASE_IN_WORKERS)
+    RuntimeEnabledFeatures::sharedFeatures().setIndexedDBWorkersEnabled(enabled);
+#else
+    UNUSED_PARAM(enabled);
+#endif
+}
+
+void InternalSettings::setCSSGridLayoutEnabled(bool enabled)
+{
+    RuntimeEnabledFeatures::sharedFeatures().setCSSGridLayoutEnabled(enabled);
+}
+
+void InternalSettings::setWebGL2Enabled(bool enabled)
+{
+#if ENABLE(WEBGL2)
+    RuntimeEnabledFeatures::sharedFeatures().setWebGL2Enabled(enabled);
+#else
+    UNUSED_PARAM(enabled);
+#endif
+}
+
+ExceptionOr<String> InternalSettings::userInterfaceDirectionPolicy()
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    switch (settings().userInterfaceDirectionPolicy()) {
+    case UserInterfaceDirectionPolicy::Content:
+        return String { ASCIILiteral { "Content" } };
+    case UserInterfaceDirectionPolicy::System:
+        return String { ASCIILiteral { "View" } };
+    }
+    ASSERT_NOT_REACHED();
+    return Exception { INVALID_ACCESS_ERR };
+}
+
+ExceptionOr<void> InternalSettings::setUserInterfaceDirectionPolicy(const String& policy)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    if (equalLettersIgnoringASCIICase(policy, "content")) {
+        settings().setUserInterfaceDirectionPolicy(UserInterfaceDirectionPolicy::Content);
+        return { };
+    }
+    if (equalLettersIgnoringASCIICase(policy, "view")) {
+        settings().setUserInterfaceDirectionPolicy(UserInterfaceDirectionPolicy::System);
+        return { };
+    }
+    return Exception { INVALID_ACCESS_ERR };
+}
+
+ExceptionOr<String> InternalSettings::systemLayoutDirection()
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    switch (settings().systemLayoutDirection()) {
+    case LTR:
+        return String { ASCIILiteral { "LTR" } };
+    case RTL:
+        return String { ASCIILiteral { "RTL" } };
+    }
+    ASSERT_NOT_REACHED();
+    return Exception { INVALID_ACCESS_ERR };
+}
+
+ExceptionOr<void> InternalSettings::setSystemLayoutDirection(const String& direction)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    if (equalLettersIgnoringASCIICase(direction, "ltr")) {
+        settings().setSystemLayoutDirection(LTR);
+        return { };
+    }
+    if (equalLettersIgnoringASCIICase(direction, "rtl")) {
+        settings().setSystemLayoutDirection(RTL);
+        return { };
+    }
+    return Exception { INVALID_ACCESS_ERR };
+}
+
+void InternalSettings::setAllowsAnySSLCertificate(bool allowsAnyCertificate)
+{
+    Settings::setAllowsAnySSLCertificate(allowsAnyCertificate);
+#if USE(SOUP)
+    SoupNetworkSession::setShouldIgnoreTLSErrors(allowsAnyCertificate);
+#endif
+}
+
+ExceptionOr<bool> InternalSettings::deferredCSSParserEnabled()
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    return settings().deferredCSSParserEnabled();
+}
+
+ExceptionOr<void> InternalSettings::setDeferredCSSParserEnabled(bool enabled)
+{
+    if (!m_page)
+        return Exception { INVALID_ACCESS_ERR };
+    settings().setDeferredCSSParserEnabled(enabled);
+    return { };
+}
+
+static InternalSettings::ForcedAccessibilityValue settingsToInternalSettingsValue(Settings::ForcedAccessibilityValue value)
+{
+    switch (value) {
+    case Settings::ForcedAccessibilityValue::System:
+        return InternalSettings::ForcedAccessibilityValue::System;
+    case Settings::ForcedAccessibilityValue::On:
+        return InternalSettings::ForcedAccessibilityValue::On;
+    case Settings::ForcedAccessibilityValue::Off:
+        return InternalSettings::ForcedAccessibilityValue::Off;
+    }
+
+    ASSERT_NOT_REACHED();
+    return InternalSettings::ForcedAccessibilityValue::Off;
+}
+
+static Settings::ForcedAccessibilityValue internalSettingsToSettingsValue(InternalSettings::ForcedAccessibilityValue value)
+{
+    switch (value) {
+    case InternalSettings::ForcedAccessibilityValue::System:
+        return Settings::ForcedAccessibilityValue::System;
+    case InternalSettings::ForcedAccessibilityValue::On:
+        return Settings::ForcedAccessibilityValue::On;
+    case InternalSettings::ForcedAccessibilityValue::Off:
+        return Settings::ForcedAccessibilityValue::Off;
+    }
+
+    ASSERT_NOT_REACHED();
+    return Settings::ForcedAccessibilityValue::Off;
+}
+
+InternalSettings::ForcedAccessibilityValue InternalSettings::forcedColorsAreInvertedAccessibilityValue() const
+{
+    return settingsToInternalSettingsValue(settings().forcedColorsAreInvertedAccessibilityValue());
+}
+
+void InternalSettings::setForcedColorsAreInvertedAccessibilityValue(InternalSettings::ForcedAccessibilityValue value)
+{
+    settings().setForcedColorsAreInvertedAccessibilityValue(internalSettingsToSettingsValue(value));
+}
+
+InternalSettings::ForcedAccessibilityValue InternalSettings::forcedDisplayIsMonochromeAccessibilityValue() const
+{
+    return settingsToInternalSettingsValue(settings().forcedDisplayIsMonochromeAccessibilityValue());
+}
+
+void InternalSettings::setForcedDisplayIsMonochromeAccessibilityValue(InternalSettings::ForcedAccessibilityValue value)
+{
+    settings().setForcedDisplayIsMonochromeAccessibilityValue(internalSettingsToSettingsValue(value));
+}
+
+InternalSettings::ForcedAccessibilityValue InternalSettings::forcedPrefersReducedMotionAccessibilityValue() const
+{
+    return settingsToInternalSettingsValue(settings().forcedPrefersReducedMotionAccessibilityValue());
+}
+
+void InternalSettings::setForcedPrefersReducedMotionAccessibilityValue(InternalSettings::ForcedAccessibilityValue value)
+{
+    settings().setForcedPrefersReducedMotionAccessibilityValue(internalSettingsToSettingsValue(value));
+}
+
+// If you add to this class, make sure that you update the Backup class for test reproducability!
+
 }