Move IndexedDB from WEBKIT_DEPRECATED to dedicated thread

content/browser/in_process_webkit/indexed_db_dispatcher_host.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 30 matching lines @@
  public:
   // Only call the constructor from the UI thread.
   IndexedDBDispatcherHost(int ipc_process_id,
                           IndexedDBContextImpl* indexed_db_context);
 
   static ::IndexedDBDatabaseMetadata ConvertMetadata(
       const content::IndexedDBDatabaseMetadata& metadata);
 
   // BrowserMessageFilter implementation.
   virtual void OnChannelClosing() OVERRIDE;
-  virtual void OverrideThreadForMessage(const IPC::Message& message,
-                                        BrowserThread::ID* thread) OVERRIDE;
+  virtual void OnDestruct() const OVERRIDE;
+  virtual base::TaskRunner* OverrideTaskRunnerForMessage(
+      const IPC::Message& message) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
   void FinishTransaction(int64 host_transaction_id, bool committed);
 
   // A shortcut for accessing our context.
   IndexedDBContextImpl* Context() { return indexed_db_context_.get(); }
 
   // The various IndexedDBCallbacks children call these methods to add the
   // results into the applicable map.  See below for more details.
   int32 Add(WebIDBCursorImpl* idb_cursor);
   int32 Add(WebIDBDatabaseImpl* idb_database,
             int32 ipc_thread_id,
             const GURL& origin_url);
 
   void RegisterTransactionId(int64 host_transaction_id, const GURL& origin_url);
 
   WebIDBCursorImpl* GetCursorFromId(int32 ipc_cursor_id);
 
   int64 HostTransactionId(int64 transaction_id);
   int64 RendererTransactionId(int64 host_transaction_id);
 
  private:
+  // Friends to enable OnDestruct() delegation.
+  friend class BrowserThread;
+  friend class base::DeleteHelper<IndexedDBDispatcherHost>;
+
   virtual ~IndexedDBDispatcherHost();
 
   // Message processing. Most of the work is delegated to the dispatcher hosts
   // below.
   void OnIDBFactoryGetDatabaseNames(
       const IndexedDBHostMsg_FactoryGetDatabaseNames_Params& p);
   void OnIDBFactoryOpen(const IndexedDBHostMsg_FactoryOpen_Params& p);
 
   void OnIDBFactoryDeleteDatabase(
       const IndexedDBHostMsg_FactoryDeleteDatabase_Params& p);
@@ skipping 96 matching lines @@
                          int used_prefetches,
                          int unused_prefetches);
     void OnDestroyed(int32 ipc_cursor_id);
 
     IndexedDBDispatcherHost* parent_;
     IDMap<WebIDBCursorImpl, IDMapOwnPointer> map_;
   };
 
   scoped_refptr<IndexedDBContextImpl> indexed_db_context_;
 
-  // Only access on WebKit thread.
+  // Only access on IndexedDB thread.
   scoped_ptr<DatabaseDispatcherHost> database_dispatcher_host_;
   scoped_ptr<CursorDispatcherHost> cursor_dispatcher_host_;
 
   // Used to dispatch messages to the correct view host.
   int ipc_process_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_