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

content/common/fileapi/file_system_dispatcher.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/file_system_dispatcher.h"
 
 #include "base/file_util.h"
 #include "base/process.h"
 #include "content/common/child_thread.h"
 #include "content/common/fileapi/file_system_messages.h"
 
+namespace content {
+
 FileSystemDispatcher::FileSystemDispatcher() {
 }
 
 FileSystemDispatcher::~FileSystemDispatcher() {
   // Make sure we fire all the remaining callbacks.
   for (IDMap<fileapi::FileSystemCallbackDispatcher, IDMapOwnPointer>::iterator
            iter(&dispatchers_); !iter.IsAtEnd(); iter.Advance()) {
     int request_id = iter.GetCurrentKey();
     fileapi::FileSystemCallbackDispatcher* dispatcher = iter.GetCurrentValue();
     DCHECK(dispatcher);
@@ skipping 300 matching lines @@
 }
 
 void FileSystemDispatcher::OnDidOpenFile(
     int request_id, IPC::PlatformFileForTransit file) {
   fileapi::FileSystemCallbackDispatcher* dispatcher =
       dispatchers_.Lookup(request_id);
   DCHECK(dispatcher);
   dispatcher->DidOpenFile(IPC::PlatformFileForTransitToPlatformFile(file));
   dispatchers_.Remove(request_id);
 }
+
+}  // namespace content