Move BrowserMessageFilter to public, and into content namespace.

content/browser/file_system/file_system_dispatcher_host.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/file_system/file_system_dispatcher_host.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/platform_file.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 #include "content/common/file_system_messages.h"
 #include "content/public/browser/user_metrics.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_platform_file.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_operation.h"
 #include "webkit/fileapi/file_system_operation.h"
 #include "webkit/fileapi/file_system_quota_util.h"
 #include "webkit/fileapi/file_system_util.h"
 
+using content::BrowserMessageFilter;
 using content::BrowserThread;
 using content::UserMetricsAction;
 using fileapi::FileSystemCallbackDispatcher;
 using fileapi::FileSystemFileUtil;
 using fileapi::FileSystemOperation;
 using fileapi::FileSystemOperationContext;
 
 class BrowserFileSystemCallbackDispatcher
     : public FileSystemCallbackDispatcher {
  public:
@@ skipping 276 matching lines @@
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
       context_);
   operations_.AddWithID(operation, request_id);
   return operation;
 }
 
 void FileSystemDispatcherHost::UnregisterOperation(int request_id) {
   DCHECK(operations_.Lookup(request_id));
   operations_.Remove(request_id);
 }