Make BrowserMessageFilter support dispatching messages on different threads.

chrome/browser/worker_host/worker_process_host.h

 // Copyright (c) 2009 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 CHROME_BROWSER_WORKER_HOST_WORKER_PROCESS_HOST_H_
 #define CHROME_BROWSER_WORKER_HOST_WORKER_PROCESS_HOST_H_
 #pragma once
 
 #include <list>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/ref_counted.h"
 #include "chrome/browser/browser_child_process_host.h"
-#include "chrome/browser/browser_io_message_filter.h"
+#include "chrome/browser/browser_message_filter.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/worker_host/worker_document_set.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_channel.h"
 
 class BlobDispatcherHost;
 class ChromeURLRequestContext;
 class ChromeURLRequestContextGetter;
 class DatabaseDispatcherHost;
 class FileSystemDispatcherHost;
@@ skipping 188 matching lines @@
   scoped_refptr<ChromeURLRequestContext> request_context_;
   scoped_refptr<DatabaseDispatcherHost> db_dispatcher_host_;
   scoped_ptr<BlobDispatcherHost> blob_dispatcher_host_;
   scoped_refptr<FileSystemDispatcherHost> file_system_dispatcher_host_;
   scoped_refptr<FileUtilitiesDispatcherHost> file_utilities_dispatcher_host_;
   scoped_refptr<MimeRegistryDispatcher> mime_registry_dispatcher_;
 
   // Holds all the IPC message filters.  Since the worker process host is on the
   // IO thread, we don't have a IPC::ChannelProxy and so we manage filters
   // manually.
-  std::vector<scoped_refptr<BrowserIOMessageFilter> > filters_;
+  std::vector<scoped_refptr<BrowserMessageFilter> > filters_;
 
   // A callback to create a routing id for the associated worker process.
   scoped_ptr<CallbackWithReturnValue<int>::Type> next_route_id_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkerProcessHost);
 };
 
 #endif  // CHROME_BROWSER_WORKER_HOST_WORKER_PROCESS_HOST_H_