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

content/common/appcache/appcache_backend_proxy.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_COMMON_APPCACHE_APPCACHE_BACKEND_PROXY_H_
 #define CONTENT_COMMON_APPCACHE_APPCACHE_BACKEND_PROXY_H_
 
 #include "ipc/ipc_sender.h"
 #include "webkit/appcache/appcache_interfaces.h"
 
+namespace content {
+
 // Sends appcache related messages to the main process.
 class AppCacheBackendProxy : public appcache::AppCacheBackend {
  public:
   explicit AppCacheBackendProxy(IPC::Sender* sender) : sender_(sender) {}
 
   IPC::Sender* sender() const { return sender_; }
 
   // AppCacheBackend methods
   virtual void RegisterHost(int host_id) OVERRIDE;
   virtual void UnregisterHost(int host_id) OVERRIDE;
@@ skipping 17 matching lines @@
   virtual bool StartUpdate(int host_id) OVERRIDE;
   virtual bool SwapCache(int host_id) OVERRIDE;
   virtual void GetResourceList(
       int host_id,
       std::vector<appcache::AppCacheResourceInfo>* resource_infos) OVERRIDE;
 
  private:
   IPC::Sender* sender_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_APPCACHE_APPCACHE_BACKEND_PROXY_H_