Move extension messages to their own file and add a RenderViewObserver to start moving the extens...

chrome/browser/tab_contents/background_contents.cc

 // Copyright (c) 2011 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/tab_contents/background_contents.h"
 
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/desktop_notification_handler.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/common/extensions/extension_constants.h"
-#include "chrome/common/render_messages_params.h"
+#include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/common/view_types.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/site_instance.h"
 #include "content/common/notification_service.h"
 #include "content/common/view_messages.h"
 #include "ui/gfx/rect.h"
 
 ////////////////
@@ skipping 181 matching lines @@
 
 WebPreferences BackgroundContents::GetWebkitPrefs() {
   // TODO(rafaelw): Consider enabling the webkit_prefs.dom_paste_enabled for
   // apps.
   Profile* profile = render_view_host_->process()->profile();
   return RenderViewHostDelegateHelper::GetWebkitPrefs(profile,
                                                       false);  // is_web_ui
 }
 
 void BackgroundContents::ProcessWebUIMessage(
-    const ViewHostMsg_DomMessage_Params& params) {
+    const ExtensionHostMsg_DomMessage_Params& params) {
   // TODO(rafaelw): It may make sense for extensions to be able to open
   // BackgroundContents to chrome-extension://<id> pages. Consider implementing.
   render_view_host_->BlockExtensionRequest(params.request_id);
 }
 
 void BackgroundContents::CreateNewWindow(
     int route_id,
     const ViewHostMsg_CreateWindow_Params& params) {
   delegate_view_helper_.CreateNewWindow(
       route_id,
@@ skipping 36 matching lines @@
 BackgroundContents*
 BackgroundContents::GetBackgroundContentsByID(int render_process_id,
                                               int render_view_id) {
   RenderViewHost* render_view_host =
       RenderViewHost::FromID(render_process_id, render_view_id);
   if (!render_view_host)
     return NULL;
 
   return render_view_host->delegate()->GetAsBackgroundContents();
 }