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diff --git a/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.h b/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.h
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+++ b/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.h
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+/*
+ * Copyright (C) 2014-2017 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
+ */
+
+#pragma once
+
+#include "WebProcessLifetimeObserver.h"
+#include <WebCore/SecurityOriginData.h>
+#include <WebCore/SecurityOriginHash.h>
+#include <WebCore/SessionID.h>
+#include <functional>
+#include <wtf/HashSet.h>
+#include <wtf/OptionSet.h>
+#include <wtf/RefCounted.h>
+#include <wtf/RefPtr.h>
+#include <wtf/WorkQueue.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+class SecurityOrigin;
+}
+
+namespace WebKit {
+
+class StorageManager;
+class WebPageProxy;
+class WebProcessPool;
+class WebResourceLoadStatisticsStore;
+enum class WebsiteDataFetchOption;
+enum class WebsiteDataType;
+struct WebsiteDataRecord;
+
+#if ENABLE(NETSCAPE_PLUGIN_API)
+struct PluginModuleInfo;
+#endif
+
+class WebsiteDataStore : public RefCounted<WebsiteDataStore>, public WebProcessLifetimeObserver {
+public:
+    struct Configuration {
+        String networkCacheDirectory;
+        String applicationCacheDirectory;
+        String applicationCacheFlatFileSubdirectoryName;
+
+        String mediaCacheDirectory;
+        String webSQLDatabaseDirectory;
+        String localStorageDirectory;
+        String mediaKeysStorageDirectory;
+        String resourceLoadStatisticsDirectory;
+    };
+    static Ref<WebsiteDataStore> createNonPersistent();
+    static Ref<WebsiteDataStore> create(Configuration);
+    virtual ~WebsiteDataStore();
+
+    uint64_t identifier() const { return m_identifier; }
+
+    bool isPersistent() const { return !m_sessionID.isEphemeral(); }
+    WebCore::SessionID sessionID() const { return m_sessionID; }
+
+    bool resourceLoadStatisticsEnabled() const;
+    void setResourceLoadStatisticsEnabled(bool);
+    void registerSharedResourceLoadObserver();
+
+    static void cloneSessionData(WebPageProxy& sourcePage, WebPageProxy& newPage);
+
+    void fetchData(OptionSet<WebsiteDataType>, OptionSet<WebsiteDataFetchOption>, std::function<void (Vector<WebsiteDataRecord>)> completionHandler);
+    void fetchDataForTopPrivatelyOwnedDomains(OptionSet<WebsiteDataType>, OptionSet<WebsiteDataFetchOption>, const Vector<String>& topPrivatelyOwnedDomains, std::function<void(Vector<WebsiteDataRecord>)> completionHandler);
+    void removeData(OptionSet<WebsiteDataType>, std::chrono::system_clock::time_point modifiedSince, std::function<void ()> completionHandler);
+    void removeData(OptionSet<WebsiteDataType>, const Vector<WebsiteDataRecord>&, std::function<void ()> completionHandler);
+    void removeDataForTopPrivatelyOwnedDomains(OptionSet<WebsiteDataType>, OptionSet<WebsiteDataFetchOption>, const Vector<String>& topPrivatelyOwnedDomains, std::function<void()> completionHandler);
+
+    StorageManager* storageManager() { return m_storageManager.get(); }
+
+private:
+    explicit WebsiteDataStore(WebCore::SessionID);
+    explicit WebsiteDataStore(Configuration);
+
+    // WebProcessLifetimeObserver.
+    void webPageWasAdded(WebPageProxy&) override;
+    void webPageWasRemoved(WebPageProxy&) override;
+    void webProcessWillOpenConnection(WebProcessProxy&, IPC::Connection&) override;
+    void webPageWillOpenConnection(WebPageProxy&, IPC::Connection&) override;
+    void webPageDidCloseConnection(WebPageProxy&, IPC::Connection&) override;
+    void webProcessDidCloseConnection(WebProcessProxy&, IPC::Connection&) override;
+
+    void platformInitialize();
+    void platformDestroy();
+    static void platformRemoveRecentSearches(std::chrono::system_clock::time_point);
+
+    HashSet<RefPtr<WebProcessPool>> processPools() const;
+
+#if ENABLE(NETSCAPE_PLUGIN_API)
+    Vector<PluginModuleInfo> plugins() const;
+#endif
+
+    static Vector<WebCore::SecurityOriginData> mediaKeyOrigins(const String& mediaKeysStorageDirectory);
+    static void removeMediaKeys(const String& mediaKeysStorageDirectory, std::chrono::system_clock::time_point modifiedSince);
+    static void removeMediaKeys(const String& mediaKeysStorageDirectory, const HashSet<WebCore::SecurityOriginData>&);
+
+    const uint64_t m_identifier;
+    const WebCore::SessionID m_sessionID;
+
+    const Configuration m_configuration;
+
+    const RefPtr<StorageManager> m_storageManager;
+    const RefPtr<WebResourceLoadStatisticsStore> m_resourceLoadStatistics;
+
+    Ref<WorkQueue> m_queue;
+};
+
+}