webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

8 files changed, 865 insertions, 55 deletions

diff --git a/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.cpp b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.cpp
new file mode 100644
index 000000000..e6c1aa2f1
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.cpp
@@ -0,0 +1,368 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include "config.h"
+#include "WebIDBConnectionToServer.h"
+
+#if ENABLE(INDEXED_DATABASE)
+
+#include "DataReference.h"
+#include "DatabaseToWebProcessConnectionMessages.h"
+#include "NetworkConnectionToWebProcessMessages.h"
+#include "NetworkProcessConnection.h"
+#include "WebCoreArgumentCoders.h"
+#include "WebIDBConnectionToClientMessages.h"
+#include "WebIDBResult.h"
+#include "WebProcess.h"
+#include "WebToDatabaseProcessConnection.h"
+#include <WebCore/IDBConnectionToServer.h>
+#include <WebCore/IDBCursorInfo.h>
+#include <WebCore/IDBDatabaseException.h>
+#include <WebCore/IDBError.h>
+#include <WebCore/IDBIndexInfo.h>
+#include <WebCore/IDBIterateCursorData.h>
+#include <WebCore/IDBKeyRangeData.h>
+#include <WebCore/IDBObjectStoreInfo.h>
+#include <WebCore/IDBOpenDBRequest.h>
+#include <WebCore/IDBRequestData.h>
+#include <WebCore/IDBResourceIdentifier.h>
+#include <WebCore/IDBResultData.h>
+#include <WebCore/IDBTransactionInfo.h>
+#include <WebCore/IDBValue.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+Ref<WebIDBConnectionToServer> WebIDBConnectionToServer::create()
+{
+    return adoptRef(*new WebIDBConnectionToServer);
+}
+
+WebIDBConnectionToServer::WebIDBConnectionToServer()
+{
+    relaxAdoptionRequirement();
+
+    m_isOpenInServer = sendSync(Messages::DatabaseToWebProcessConnection::EstablishIDBConnectionToServer(), Messages::DatabaseToWebProcessConnection::EstablishIDBConnectionToServer::Reply(m_identifier));
+    m_connectionToServer = IDBClient::IDBConnectionToServer::create(*this);
+}
+
+WebIDBConnectionToServer::~WebIDBConnectionToServer()
+{
+    if (m_isOpenInServer)
+        send(Messages::DatabaseToWebProcessConnection::RemoveIDBConnectionToServer(m_identifier));
+}
+
+IPC::Connection* WebIDBConnectionToServer::messageSenderConnection()
+{
+    return &WebProcess::singleton().webToDatabaseProcessConnection()->connection();
+}
+
+IDBClient::IDBConnectionToServer& WebIDBConnectionToServer::coreConnectionToServer()
+{
+    return *m_connectionToServer;
+}
+
+void WebIDBConnectionToServer::deleteDatabase(const IDBRequestData& requestData)
+{
+    send(Messages::WebIDBConnectionToClient::DeleteDatabase(requestData));
+}
+
+void WebIDBConnectionToServer::openDatabase(const IDBRequestData& requestData)
+{
+    send(Messages::WebIDBConnectionToClient::OpenDatabase(requestData));
+}
+
+void WebIDBConnectionToServer::abortTransaction(const IDBResourceIdentifier& transactionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::AbortTransaction(transactionIdentifier));
+}
+
+void WebIDBConnectionToServer::commitTransaction(const IDBResourceIdentifier& transactionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::CommitTransaction(transactionIdentifier));
+}
+
+void WebIDBConnectionToServer::didFinishHandlingVersionChangeTransaction(uint64_t databaseConnectionIdentifier, const IDBResourceIdentifier& transactionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::DidFinishHandlingVersionChangeTransaction(databaseConnectionIdentifier, transactionIdentifier));
+}
+
+void WebIDBConnectionToServer::createObjectStore(const IDBRequestData& requestData, const IDBObjectStoreInfo& info)
+{
+    send(Messages::WebIDBConnectionToClient::CreateObjectStore(requestData, info));
+}
+
+void WebIDBConnectionToServer::deleteObjectStore(const IDBRequestData& requestData, const String& objectStoreName)
+{
+    send(Messages::WebIDBConnectionToClient::DeleteObjectStore(requestData, objectStoreName));
+}
+
+void WebIDBConnectionToServer::renameObjectStore(const IDBRequestData& requestData, uint64_t objectStoreIdentifier, const String& newName)
+{
+    send(Messages::WebIDBConnectionToClient::RenameObjectStore(requestData, objectStoreIdentifier, newName));
+}
+
+void WebIDBConnectionToServer::clearObjectStore(const IDBRequestData& requestData, uint64_t objectStoreIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::ClearObjectStore(requestData, objectStoreIdentifier));
+}
+
+void WebIDBConnectionToServer::createIndex(const IDBRequestData& requestData, const IDBIndexInfo& info)
+{
+    send(Messages::WebIDBConnectionToClient::CreateIndex(requestData, info));
+}
+
+void WebIDBConnectionToServer::deleteIndex(const IDBRequestData& requestData, uint64_t objectStoreIdentifier, const String& indexName)
+{
+    send(Messages::WebIDBConnectionToClient::DeleteIndex(requestData, objectStoreIdentifier, indexName));
+}
+
+void WebIDBConnectionToServer::renameIndex(const IDBRequestData& requestData, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, const String& newName)
+{
+    send(Messages::WebIDBConnectionToClient::RenameIndex(requestData, objectStoreIdentifier, indexIdentifier, newName));
+}
+
+void WebIDBConnectionToServer::putOrAdd(const IDBRequestData& requestData, const IDBKeyData& keyData, const IDBValue& value, const IndexedDB::ObjectStoreOverwriteMode mode)
+{
+    send(Messages::WebIDBConnectionToClient::PutOrAdd(requestData, keyData, value, static_cast<unsigned>(mode)));
+}
+
+void WebIDBConnectionToServer::getRecord(const IDBRequestData& requestData, const IDBGetRecordData& getRecordData)
+{
+    send(Messages::WebIDBConnectionToClient::GetRecord(requestData, getRecordData));
+}
+
+void WebIDBConnectionToServer::getAllRecords(const IDBRequestData& requestData, const IDBGetAllRecordsData& getAllRecordsData)
+{
+    send(Messages::WebIDBConnectionToClient::GetAllRecords(requestData, getAllRecordsData));
+}
+
+void WebIDBConnectionToServer::getCount(const IDBRequestData& requestData, const IDBKeyRangeData& range)
+{
+    send(Messages::WebIDBConnectionToClient::GetCount(requestData, range));
+}
+
+void WebIDBConnectionToServer::deleteRecord(const IDBRequestData& requestData, const IDBKeyRangeData& range)
+{
+    send(Messages::WebIDBConnectionToClient::DeleteRecord(requestData, range));
+}
+
+void WebIDBConnectionToServer::openCursor(const IDBRequestData& requestData, const IDBCursorInfo& info)
+{
+    send(Messages::WebIDBConnectionToClient::OpenCursor(requestData, info));
+}
+
+void WebIDBConnectionToServer::iterateCursor(const IDBRequestData& requestData, const IDBIterateCursorData& data)
+{
+    send(Messages::WebIDBConnectionToClient::IterateCursor(requestData, data));
+}
+
+void WebIDBConnectionToServer::establishTransaction(uint64_t databaseConnectionIdentifier, const IDBTransactionInfo& info)
+{
+    send(Messages::WebIDBConnectionToClient::EstablishTransaction(databaseConnectionIdentifier, info));
+}
+
+void WebIDBConnectionToServer::databaseConnectionPendingClose(uint64_t databaseConnectionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::DatabaseConnectionPendingClose(databaseConnectionIdentifier));
+}
+
+void WebIDBConnectionToServer::databaseConnectionClosed(uint64_t databaseConnectionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::DatabaseConnectionClosed(databaseConnectionIdentifier));
+}
+
+void WebIDBConnectionToServer::abortOpenAndUpgradeNeeded(uint64_t databaseConnectionIdentifier, const IDBResourceIdentifier& transactionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::AbortOpenAndUpgradeNeeded(databaseConnectionIdentifier, transactionIdentifier));
+}
+
+void WebIDBConnectionToServer::didFireVersionChangeEvent(uint64_t databaseConnectionIdentifier, const IDBResourceIdentifier& requestIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::DidFireVersionChangeEvent(databaseConnectionIdentifier, requestIdentifier));
+}
+
+void WebIDBConnectionToServer::openDBRequestCancelled(const IDBRequestData& requestData)
+{
+    send(Messages::WebIDBConnectionToClient::OpenDBRequestCancelled(requestData));
+}
+
+void WebIDBConnectionToServer::confirmDidCloseFromServer(uint64_t databaseConnectionIdentifier)
+{
+    send(Messages::WebIDBConnectionToClient::ConfirmDidCloseFromServer(databaseConnectionIdentifier));
+}
+
+void WebIDBConnectionToServer::getAllDatabaseNames(const WebCore::SecurityOriginData& topOrigin, const WebCore::SecurityOriginData& openingOrigin, uint64_t callbackID)
+{
+    send(Messages::WebIDBConnectionToClient::GetAllDatabaseNames(m_identifier, topOrigin, openingOrigin, callbackID));
+}
+
+void WebIDBConnectionToServer::didDeleteDatabase(const IDBResultData& result)
+{
+    m_connectionToServer->didDeleteDatabase(result);
+}
+
+void WebIDBConnectionToServer::didOpenDatabase(const IDBResultData& result)
+{
+    m_connectionToServer->didOpenDatabase(result);
+}
+
+void WebIDBConnectionToServer::didAbortTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError& error)
+{
+    m_connectionToServer->didAbortTransaction(transactionIdentifier, error);
+}
+
+void WebIDBConnectionToServer::didCommitTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError& error)
+{
+    m_connectionToServer->didCommitTransaction(transactionIdentifier, error);
+}
+
+void WebIDBConnectionToServer::didCreateObjectStore(const IDBResultData& result)
+{
+    m_connectionToServer->didCreateObjectStore(result);
+}
+
+void WebIDBConnectionToServer::didDeleteObjectStore(const IDBResultData& result)
+{
+    m_connectionToServer->didDeleteObjectStore(result);
+}
+
+void WebIDBConnectionToServer::didRenameObjectStore(const IDBResultData& result)
+{
+    m_connectionToServer->didRenameObjectStore(result);
+}
+
+void WebIDBConnectionToServer::didClearObjectStore(const IDBResultData& result)
+{
+    m_connectionToServer->didClearObjectStore(result);
+}
+
+void WebIDBConnectionToServer::didCreateIndex(const IDBResultData& result)
+{
+    m_connectionToServer->didCreateIndex(result);
+}
+
+void WebIDBConnectionToServer::didDeleteIndex(const IDBResultData& result)
+{
+    m_connectionToServer->didDeleteIndex(result);
+}
+
+void WebIDBConnectionToServer::didRenameIndex(const IDBResultData& result)
+{
+    m_connectionToServer->didRenameIndex(result);
+}
+
+void WebIDBConnectionToServer::didPutOrAdd(const IDBResultData& result)
+{
+    m_connectionToServer->didPutOrAdd(result);
+}
+
+static void preregisterSandboxExtensionsIfNecessary(const WebIDBResult& result)
+{
+    auto resultType = result.resultData().type();
+    if (resultType != IDBResultType::GetRecordSuccess && resultType != IDBResultType::OpenCursorSuccess && resultType != IDBResultType::IterateCursorSuccess && resultType != IDBResultType::GetAllRecordsSuccess) {
+        ASSERT(resultType == IDBResultType::Error);
+        return;
+    }
+
+    const auto filePaths = resultType == IDBResultType::GetAllRecordsSuccess ? result.resultData().getAllResult().allBlobFilePaths() : result.resultData().getResult().value().blobFilePaths();
+
+#if ENABLE(SANDBOX_EXTENSIONS)
+    ASSERT(filePaths.size() == result.handles().size());
+#endif
+
+    if (!filePaths.isEmpty())
+        WebProcess::singleton().networkConnection().connection().send(Messages::NetworkConnectionToWebProcess::PreregisterSandboxExtensionsForOptionallyFileBackedBlob(filePaths, result.handles()), 0);
+}
+
+void WebIDBConnectionToServer::didGetRecord(const WebIDBResult& result)
+{
+    preregisterSandboxExtensionsIfNecessary(result);
+    m_connectionToServer->didGetRecord(result.resultData());
+}
+
+void WebIDBConnectionToServer::didGetAllRecords(const WebIDBResult& result)
+{
+    if (result.resultData().getAllResult().type() == IndexedDB::GetAllType::Values)
+        preregisterSandboxExtensionsIfNecessary(result);
+    m_connectionToServer->didGetAllRecords(result.resultData());
+}
+
+void WebIDBConnectionToServer::didGetCount(const IDBResultData& result)
+{
+    m_connectionToServer->didGetCount(result);
+}
+
+void WebIDBConnectionToServer::didDeleteRecord(const IDBResultData& result)
+{
+    m_connectionToServer->didDeleteRecord(result);
+}
+
+void WebIDBConnectionToServer::didOpenCursor(const WebIDBResult& result)
+{
+    preregisterSandboxExtensionsIfNecessary(result);
+    m_connectionToServer->didOpenCursor(result.resultData());
+}
+
+void WebIDBConnectionToServer::didIterateCursor(const WebIDBResult& result)
+{
+    preregisterSandboxExtensionsIfNecessary(result);
+    m_connectionToServer->didIterateCursor(result.resultData());
+}
+
+void WebIDBConnectionToServer::fireVersionChangeEvent(uint64_t uniqueDatabaseConnectionIdentifier, const IDBResourceIdentifier& requestIdentifier, uint64_t requestedVersion)
+{
+    m_connectionToServer->fireVersionChangeEvent(uniqueDatabaseConnectionIdentifier, requestIdentifier, requestedVersion);
+}
+
+void WebIDBConnectionToServer::didStartTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError& error)
+{
+    m_connectionToServer->didStartTransaction(transactionIdentifier, error);
+}
+
+void WebIDBConnectionToServer::didCloseFromServer(uint64_t databaseConnectionIdentifier, const IDBError& error)
+{
+    m_connectionToServer->didCloseFromServer(databaseConnectionIdentifier, error);
+}
+
+void WebIDBConnectionToServer::notifyOpenDBRequestBlocked(const IDBResourceIdentifier& requestIdentifier, uint64_t oldVersion, uint64_t newVersion)
+{
+    m_connectionToServer->notifyOpenDBRequestBlocked(requestIdentifier, oldVersion, newVersion);
+}
+
+void WebIDBConnectionToServer::didGetAllDatabaseNames(uint64_t callbackID, const Vector<String>& databaseNames)
+{
+    m_connectionToServer->didGetAllDatabaseNames(callbackID, databaseNames);
+}
+
+void WebIDBConnectionToServer::connectionToServerLost()
+{
+    m_connectionToServer->connectionToServerLost({ WebCore::IDBDatabaseException::UnknownError, ASCIILiteral("An internal error was encountered in the Indexed Database server") });
+}
+
+} // namespace WebKit
+
+#endif // ENABLE(INDEXED_DATABASE)
diff --git a/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.h b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.h
new file mode 100644
index 000000000..c5ed93f38
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2016 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
+
+#if ENABLE(INDEXED_DATABASE)
+
+#include "MessageSender.h"
+#include "SandboxExtension.h"
+#include <WebCore/IDBConnectionToServer.h>
+
+namespace WebKit {
+
+class WebIDBResult;
+
+class WebIDBConnectionToServer final : public WebCore::IDBClient::IDBConnectionToServerDelegate, public IPC::MessageSender, public RefCounted<WebIDBConnectionToServer> {
+public:
+    static Ref<WebIDBConnectionToServer> create();
+
+    virtual ~WebIDBConnectionToServer();
+
+    WebCore::IDBClient::IDBConnectionToServer& coreConnectionToServer();
+    uint64_t identifier() const final { return m_identifier; }
+    uint64_t messageSenderDestinationID() final { return m_identifier; }
+
+    // IDBConnectionToServerDelegate
+    void deleteDatabase(const WebCore::IDBRequestData&) final;
+    void openDatabase(const WebCore::IDBRequestData&) final;
+    void abortTransaction(const WebCore::IDBResourceIdentifier&) final;
+    void commitTransaction(const WebCore::IDBResourceIdentifier&) final;
+    void didFinishHandlingVersionChangeTransaction(uint64_t databaseConnectionIdentifier, const WebCore::IDBResourceIdentifier&) final;
+    void createObjectStore(const WebCore::IDBRequestData&, const WebCore::IDBObjectStoreInfo&) final;
+    void deleteObjectStore(const WebCore::IDBRequestData&, const String& objectStoreName) final;
+    void renameObjectStore(const WebCore::IDBRequestData&, uint64_t objectStoreIdentifier, const String& newName) final;
+    void clearObjectStore(const WebCore::IDBRequestData&, uint64_t objectStoreIdentifier) final;
+    void createIndex(const WebCore::IDBRequestData&, const WebCore::IDBIndexInfo&) final;
+    void deleteIndex(const WebCore::IDBRequestData&, uint64_t objectStoreIdentifier, const String& indexName) final;
+    void renameIndex(const WebCore::IDBRequestData&, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, const String& newName) final;
+    void putOrAdd(const WebCore::IDBRequestData&, const WebCore::IDBKeyData&, const WebCore::IDBValue&, const WebCore::IndexedDB::ObjectStoreOverwriteMode) final;
+    void getRecord(const WebCore::IDBRequestData&, const WebCore::IDBGetRecordData&) final;
+    void getAllRecords(const WebCore::IDBRequestData&, const WebCore::IDBGetAllRecordsData&) final;
+    void getCount(const WebCore::IDBRequestData&, const WebCore::IDBKeyRangeData&) final;
+    void deleteRecord(const WebCore::IDBRequestData&, const WebCore::IDBKeyRangeData&) final;
+    void openCursor(const WebCore::IDBRequestData&, const WebCore::IDBCursorInfo&) final;
+    void iterateCursor(const WebCore::IDBRequestData&, const WebCore::IDBIterateCursorData&) final;
+    void establishTransaction(uint64_t databaseConnectionIdentifier, const WebCore::IDBTransactionInfo&) final;
+    void databaseConnectionPendingClose(uint64_t databaseConnectionIdentifier) final;
+    void databaseConnectionClosed(uint64_t databaseConnectionIdentifier) final;
+    void abortOpenAndUpgradeNeeded(uint64_t databaseConnectionIdentifier, const WebCore::IDBResourceIdentifier& transactionIdentifier) final;
+    void didFireVersionChangeEvent(uint64_t databaseConnectionIdentifier, const WebCore::IDBResourceIdentifier& requestIdentifier) final;
+    void openDBRequestCancelled(const WebCore::IDBRequestData&) final;
+    void confirmDidCloseFromServer(uint64_t databaseConnectionIdentifier) final;
+
+    void getAllDatabaseNames(const WebCore::SecurityOriginData& topOrigin, const WebCore::SecurityOriginData& openingOrigin, uint64_t callbackID) final;
+
+    void ref() override { RefCounted<WebIDBConnectionToServer>::ref(); }
+    void deref() override { RefCounted<WebIDBConnectionToServer>::deref(); }
+
+    // Messages received from DatabaseProcess
+    void didDeleteDatabase(const WebCore::IDBResultData&);
+    void didOpenDatabase(const WebCore::IDBResultData&);
+    void didAbortTransaction(const WebCore::IDBResourceIdentifier& transactionIdentifier, const WebCore::IDBError&);
+    void didCommitTransaction(const WebCore::IDBResourceIdentifier& transactionIdentifier, const WebCore::IDBError&);
+    void didCreateObjectStore(const WebCore::IDBResultData&);
+    void didDeleteObjectStore(const WebCore::IDBResultData&);
+    void didRenameObjectStore(const WebCore::IDBResultData&);
+    void didClearObjectStore(const WebCore::IDBResultData&);
+    void didCreateIndex(const WebCore::IDBResultData&);
+    void didDeleteIndex(const WebCore::IDBResultData&);
+    void didRenameIndex(const WebCore::IDBResultData&);
+    void didPutOrAdd(const WebCore::IDBResultData&);
+    void didGetRecord(const WebIDBResult&);
+    void didGetAllRecords(const WebIDBResult&);
+    void didGetCount(const WebCore::IDBResultData&);
+    void didDeleteRecord(const WebCore::IDBResultData&);
+    void didOpenCursor(const WebIDBResult&);
+    void didIterateCursor(const WebIDBResult&);
+    void fireVersionChangeEvent(uint64_t uniqueDatabaseConnectionIdentifier, const WebCore::IDBResourceIdentifier& requestIdentifier, uint64_t requestedVersion);
+    void didStartTransaction(const WebCore::IDBResourceIdentifier& transactionIdentifier, const WebCore::IDBError&);
+    void didCloseFromServer(uint64_t databaseConnectionIdentifier, const WebCore::IDBError&);
+    void notifyOpenDBRequestBlocked(const WebCore::IDBResourceIdentifier& requestIdentifier, uint64_t oldVersion, uint64_t newVersion);
+    void didGetAllDatabaseNames(uint64_t callbackID, const Vector<String>& databaseNames);
+
+    void didReceiveMessage(IPC::Connection&, IPC::Decoder&);
+
+    void connectionToServerLost();
+
+private:
+    WebIDBConnectionToServer();
+
+    IPC::Connection* messageSenderConnection() final;
+
+    uint64_t m_identifier;
+    bool m_isOpenInServer { false };
+    RefPtr<WebCore::IDBClient::IDBConnectionToServer> m_connectionToServer;
+};
+
+} // namespace WebKit
+
+#endif // ENABLE(INDEXED_DATABASE)
diff --git a/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.messages.in b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.messages.in
new file mode 100644
index 000000000..b701074de
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.messages.in
@@ -0,0 +1,53 @@
+# Copyright (C) 2016 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.
+
+#if ENABLE(INDEXED_DATABASE) && ENABLE(DATABASE_PROCESS)
+
+messages -> WebIDBConnectionToServer {
+    DidDeleteDatabase(WebCore::IDBResultData result)
+    DidOpenDatabase(WebCore::IDBResultData result)
+    DidAbortTransaction(WebCore::IDBResourceIdentifier transactionIdentifier, WebCore::IDBError error)
+    DidCommitTransaction(WebCore::IDBResourceIdentifier transactionIdentifier, WebCore::IDBError error)
+    DidCreateObjectStore(WebCore::IDBResultData result)
+    DidDeleteObjectStore(WebCore::IDBResultData result)
+    DidRenameObjectStore(WebCore::IDBResultData result)
+    DidClearObjectStore(WebCore::IDBResultData result)
+    DidCreateIndex(WebCore::IDBResultData result)
+    DidDeleteIndex(WebCore::IDBResultData result)
+    DidRenameIndex(WebCore::IDBResultData result)
+    DidPutOrAdd(WebCore::IDBResultData result)
+    DidGetRecord(WebKit::WebIDBResult result)
+    DidGetAllRecords(WebKit::WebIDBResult result)
+    DidGetCount(WebCore::IDBResultData result)
+    DidDeleteRecord(WebCore::IDBResultData result)
+    DidOpenCursor(WebKit::WebIDBResult result)
+    DidIterateCursor(WebKit::WebIDBResult result)
+
+    FireVersionChangeEvent(uint64_t databaseConnectionIdentifier, WebCore::IDBResourceIdentifier requestIdentifier, uint64_t requestedVersion)
+    DidStartTransaction(WebCore::IDBResourceIdentifier transactionIdentifier, WebCore::IDBError error)
+    DidCloseFromServer(uint64_t databaseConnectionIdentifier, WebCore::IDBError error) final;
+    NotifyOpenDBRequestBlocked(WebCore::IDBResourceIdentifier requestIdentifier, uint64_t oldVersion, uint64_t newVersion)
+
+    DidGetAllDatabaseNames(uint64_t callbackID, Vector<String> databaseNames)
+}
+
+#endif // ENABLE(INDEXED_DATABASE) && ENABLE(DATABASE_PROCESS)
diff --git a/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBFactoryBackend.h b/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBFactoryBackend.h
deleted file mode 100644
index 4a111944e..000000000
--- a/Source/WebKit2/WebProcess/Databases/IndexedDB/WebIDBFactoryBackend.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2013 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. ``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.
- *
- */
-
-#ifndef WebIDBFactoryBackend_h
-#define WebIDBFactoryBackend_h
-
-#include <WebCore/IDBFactoryBackendInterface.h>
-
-#if ENABLE(INDEXED_DATABASE)
-
-namespace WebKit {
-
-class WebIDBFactoryBackend final : public WebCore::IDBFactoryBackendInterface {
-public:
-    static PassRefPtr<WebIDBFactoryBackend> create(const String& databaseDirectoryIdentifier) { return adoptRef(new WebIDBFactoryBackend(databaseDirectoryIdentifier)); }
-
-    virtual ~WebIDBFactoryBackend();
-
-    virtual void getDatabaseNames(PassRefPtr<WebCore::IDBCallbacks>, PassRefPtr<WebCore::SecurityOrigin>, WebCore::ScriptExecutionContext*, const String& dataDir) override;
-    virtual void open(const String& name, uint64_t version, int64_t transactionId, PassRefPtr<WebCore::IDBCallbacks>, PassRefPtr<WebCore::IDBDatabaseCallbacks>, const WebCore::SecurityOrigin& openingOrigin, const WebCore::SecurityOrigin& mainFrameOrigin) override;
-    virtual void deleteDatabase(const String& name, PassRefPtr<WebCore::IDBCallbacks>, PassRefPtr<WebCore::SecurityOrigin>, WebCore::ScriptExecutionContext*, const String& dataDir) override;
-
-    virtual void removeIDBDatabaseBackend(const String& uniqueIdentifier) override;
-
-private:
-    explicit WebIDBFactoryBackend(const String& databaseDirectoryIdentifier);
-};
-
-} // namespace WebKit
-
-#endif // ENABLE(INDEXED_DATABASE)
-#endif // WebIDBFactoryBackend_h
diff --git a/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.cpp b/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.cpp
new file mode 100644
index 000000000..ae5591b6c
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#include "config.h"
+#include "WebDatabaseProvider.h"
+
+#include "WebProcess.h"
+#include "WebToDatabaseProcessConnection.h"
+#include <WebCore/SessionID.h>
+#include <wtf/HashMap.h>
+#include <wtf/NeverDestroyed.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+static HashMap<uint64_t, WebDatabaseProvider*>& databaseProviders()
+{
+    static NeverDestroyed<HashMap<uint64_t, WebDatabaseProvider*>> databaseProviders;
+
+    return databaseProviders;
+}
+
+Ref<WebDatabaseProvider> WebDatabaseProvider::getOrCreate(uint64_t identifier)
+{
+    auto& slot = databaseProviders().add(identifier, nullptr).iterator->value;
+    if (slot)
+        return *slot;
+
+    Ref<WebDatabaseProvider> databaseProvider = adoptRef(*new WebDatabaseProvider(identifier));
+    slot = databaseProvider.ptr();
+
+    return databaseProvider;
+}
+
+WebDatabaseProvider::WebDatabaseProvider(uint64_t identifier)
+    : m_identifier(identifier)
+{
+}
+
+WebDatabaseProvider::~WebDatabaseProvider()
+{
+    ASSERT(databaseProviders().contains(m_identifier));
+
+    databaseProviders().remove(m_identifier);
+}
+
+#if ENABLE(INDEXED_DATABASE)
+
+WebCore::IDBClient::IDBConnectionToServer& WebDatabaseProvider::idbConnectionToServerForSession(const WebCore::SessionID& sessionID)
+{
+    if (sessionID.isEphemeral()) {
+        auto result = m_idbEphemeralConnectionMap.add(sessionID.sessionID(), nullptr);
+        if (result.isNewEntry)
+            result.iterator->value = WebCore::InProcessIDBServer::create();
+
+        return result.iterator->value->connectionToServer();
+    }
+
+    ASSERT(WebProcess::singleton().webToDatabaseProcessConnection());
+    return WebProcess::singleton().webToDatabaseProcessConnection()->idbConnectionToServerForSession(sessionID).coreConnectionToServer();
+}
+
+#endif
+
+}
diff --git a/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.h b/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.h
new file mode 100644
index 000000000..b72b234ff
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/WebDatabaseProvider.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef WebDatabaseProvider_h
+#define WebDatabaseProvider_h
+
+#include <WebCore/DatabaseProvider.h>
+#include <WebCore/InProcessIDBServer.h>
+#include <wtf/HashMap.h>
+
+namespace WebKit {
+
+class WebDatabaseProvider final : public WebCore::DatabaseProvider {
+public:
+    static Ref<WebDatabaseProvider> getOrCreate(uint64_t identifier);
+    virtual ~WebDatabaseProvider();
+
+#if ENABLE(INDEXED_DATABASE)
+    WebCore::IDBClient::IDBConnectionToServer& idbConnectionToServerForSession(const WebCore::SessionID&) final;
+#endif
+
+private:
+    explicit WebDatabaseProvider(uint64_t identifier);
+
+#if ENABLE(INDEXED_DATABASE)
+    HashMap<uint64_t, RefPtr<WebCore::InProcessIDBServer>> m_idbEphemeralConnectionMap;
+#endif
+
+    const uint64_t m_identifier;
+};
+
+}
+
+#endif // WebDatabaseProvider_h
diff --git a/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.cpp b/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.cpp
new file mode 100644
index 000000000..618130f4d
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2013 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. ``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
+ * 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 "WebToDatabaseProcessConnection.h"
+
+#include "DatabaseToWebProcessConnectionMessages.h"
+#include "WebIDBConnectionToServerMessages.h"
+#include "WebProcess.h"
+
+#if ENABLE(DATABASE_PROCESS)
+
+using namespace WebCore;
+
+namespace WebKit {
+
+WebToDatabaseProcessConnection::WebToDatabaseProcessConnection(IPC::Connection::Identifier connectionIdentifier)
+    : m_connection(IPC::Connection::createClientConnection(connectionIdentifier, *this))
+{
+    m_connection->open();
+}
+
+WebToDatabaseProcessConnection::~WebToDatabaseProcessConnection()
+{
+}
+
+void WebToDatabaseProcessConnection::didReceiveMessage(IPC::Connection& connection, IPC::Decoder& decoder)
+{
+#if ENABLE(INDEXED_DATABASE)
+    if (decoder.messageReceiverName() == Messages::WebIDBConnectionToServer::messageReceiverName()) {
+        auto idbConnection = m_webIDBConnectionsByIdentifier.get(decoder.destinationID());
+        if (idbConnection)
+            idbConnection->didReceiveMessage(connection, decoder);
+        return;
+    }
+#endif
+    
+    ASSERT_NOT_REACHED();
+}
+
+void WebToDatabaseProcessConnection::didClose(IPC::Connection& connection)
+{
+#if ENABLE(INDEXED_DATABASE)
+    for (auto& connection : m_webIDBConnectionsByIdentifier.values())
+        connection->connectionToServerLost();
+
+    m_webIDBConnectionsByIdentifier.clear();
+    m_webIDBConnectionsBySession.clear();
+#endif
+
+    WebProcess::singleton().webToDatabaseProcessConnectionClosed(this);
+}
+
+void WebToDatabaseProcessConnection::didReceiveInvalidMessage(IPC::Connection&, IPC::StringReference messageReceiverName, IPC::StringReference messageName)
+{
+}
+
+#if ENABLE(INDEXED_DATABASE)
+WebIDBConnectionToServer& WebToDatabaseProcessConnection::idbConnectionToServerForSession(const SessionID& sessionID)
+{
+    auto result = m_webIDBConnectionsBySession.add(sessionID, nullptr);
+    if (result.isNewEntry) {
+        result.iterator->value = WebIDBConnectionToServer::create();
+        ASSERT(!m_webIDBConnectionsByIdentifier.contains(result.iterator->value->identifier()));
+        m_webIDBConnectionsByIdentifier.set(result.iterator->value->identifier(), result.iterator->value);
+    }
+
+    return *result.iterator->value;
+}
+#endif
+
+} // namespace WebKit
+
+#endif // ENABLE(DATABASE_PROCESS)
diff --git a/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.h b/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.h
new file mode 100644
index 000000000..f36fe9184
--- /dev/null
+++ b/Source/WebKit2/WebProcess/Databases/WebToDatabaseProcessConnection.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2013 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. ``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
+ * 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.
+ *
+ */
+
+#ifndef WebToDatabaseProcessConnection_h
+#define WebToDatabaseProcessConnection_h
+
+#include "Connection.h"
+#include "MessageSender.h"
+#include "WebIDBConnectionToServer.h"
+#include <WebCore/SessionID.h>
+#include <wtf/RefCounted.h>
+
+#if ENABLE(DATABASE_PROCESS)
+
+namespace WebCore {
+class SessionID;
+}
+
+namespace WebKit {
+
+class WebToDatabaseProcessConnection : public RefCounted<WebToDatabaseProcessConnection>, public IPC::Connection::Client, public IPC::MessageSender {
+public:
+    static Ref<WebToDatabaseProcessConnection> create(IPC::Connection::Identifier connectionIdentifier)
+    {
+        return adoptRef(*new WebToDatabaseProcessConnection(connectionIdentifier));
+    }
+    ~WebToDatabaseProcessConnection();
+    
+    IPC::Connection& connection() { return m_connection.get(); }
+
+#if ENABLE(INDEXED_DATABASE)
+    WebIDBConnectionToServer& idbConnectionToServerForSession(const WebCore::SessionID&);
+#endif
+
+private:
+    WebToDatabaseProcessConnection(IPC::Connection::Identifier);
+
+    // IPC::Connection::Client
+    void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
+    void didClose(IPC::Connection&) override;
+    void didReceiveInvalidMessage(IPC::Connection&, IPC::StringReference messageReceiverName, IPC::StringReference messageName) override;
+
+    // IPC::MessageSender
+    IPC::Connection* messageSenderConnection() override { return m_connection.ptr(); }
+    uint64_t messageSenderDestinationID() override { return 0; }
+
+    Ref<IPC::Connection> m_connection;
+
+#if ENABLE(INDEXED_DATABASE)
+    HashMap<WebCore::SessionID, RefPtr<WebIDBConnectionToServer>> m_webIDBConnectionsBySession;
+    HashMap<uint64_t, RefPtr<WebIDBConnectionToServer>> m_webIDBConnectionsByIdentifier;
+#endif
+};
+
+} // namespace WebKit
+
+#endif // ENABLE(DATABASE_PROCESS)
+#endif // WebToDatabaseProcessConnection_h