Moved ExtensionMessage* into extensions 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/extensions/extension_system.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/view_type_utils.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/web_contents.h"
-
-using content::WebContents;
-
-ExtensionMessageHandler::ExtensionMessageHandler(
-    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)
-    IPC_MESSAGE_HANDLER(ExtensionHostMsg_PostMessage, OnPostMessage)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void ExtensionMessageHandler::RenderViewHostInitialized() {
-  WebContents* web_contents =
-      WebContents::FromRenderViewHost(render_view_host());
-  Send(new ExtensionMsg_NotifyRenderViewType(
-      routing_id(), chrome::GetViewType(web_contents)));
-}
-
-void ExtensionMessageHandler::OnPostMessage(int port_id,
-                                            const std::string& message) {
-  Profile* profile = Profile::FromBrowserContext(
-      render_view_host()->GetProcess()->GetBrowserContext());
-  ExtensionMessageService* message_service =
-      extensions::ExtensionSystem::Get(profile)->message_service();
-  if (message_service) {
-    message_service->PostMessageFromRenderer(port_id, message);
-  }
-}