Move Render(View|Widget)Host and associated classes to content namespace.

chrome/browser/extensions/extension_message_handler.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 "chrome/browser/extensions/extension_message_handler.h"
 
 #include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_view_host_delegate.h"
 
 ExtensionMessageHandler::ExtensionMessageHandler(
-    RenderViewHost* render_view_host)
+    content::RenderViewHost* render_view_host)
     : content::RenderViewHostObserver(render_view_host) {
 }
 
 ExtensionMessageHandler::~ExtensionMessageHandler() {
 }
 
 bool ExtensionMessageHandler::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ExtensionMessageHandler, message)
@@ skipping 10 matching lines @@
 
 void ExtensionMessageHandler::OnPostMessage(int port_id,
                                             const std::string& message) {
   Profile* profile = Profile::FromBrowserContext(
       render_view_host()->GetProcess()->GetBrowserContext());
   if (profile->GetExtensionMessageService()) {
     profile->GetExtensionMessageService()->PostMessageFromRenderer(
         port_id, message);
   }
 }