Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/fileapi/webfilewriter_impl.cc

 // 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.
 
 #include "content/common/fileapi/webfilewriter_impl.h"
 
 #include "content/common/child_thread.h"
 #include "content/common/fileapi/file_system_dispatcher.h"
 
+namespace content {
 namespace {
 
 inline FileSystemDispatcher* GetFileSystemDispatcher() {
   return ChildThread::current()->file_system_dispatcher();
 }
 }
 
 class WebFileWriterImpl::CallbackDispatcher
     : public fileapi::FileSystemCallbackDispatcher {
  public:
@@ skipping 51 matching lines @@
     const GURL& path, const GURL& blob_url, int64 offset) {
   GetFileSystemDispatcher()->Write(
       path, blob_url, offset, &request_id_,
       new CallbackDispatcher(AsWeakPtr()));
 }
 
 void WebFileWriterImpl::DoCancel() {
   GetFileSystemDispatcher()->Cancel(request_id_,
                                     new CallbackDispatcher(AsWeakPtr()));
 }
+
+}  // namespace content