Remove PerBrowser launcher, reland step 1 of 2

chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_v2app.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/ui/ash/launcher/chrome_launcher_app_menu_item_v2app.h"
 
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app.h"
 
 ChromeLauncherAppMenuItemV2App::ChromeLauncherAppMenuItemV2App(
     const string16 title,
     const gfx::Image* icon,
     const std::string& app_id,
-    ChromeLauncherControllerPerApp* launcher_controller,
+    ChromeLauncherController* launcher_controller,
     int app_index,
     bool has_leading_separator)
     : ChromeLauncherAppMenuItem(title, icon, has_leading_separator),
       launcher_controller_(launcher_controller),
       app_id_(app_id),
       app_index_(app_index) {
 }
 
 bool ChromeLauncherAppMenuItemV2App::IsEnabled() const {
   return true;
 }
 
 void ChromeLauncherAppMenuItemV2App::Execute(int event_flags) {
   // Note: At this time there is only a single app running at any point. as
   // such we will never come here with usable |event_flags|. If that ever
   // changes we should add some special close code here.
   // Note: If the application item did go away since the menu was created,
   // The controller will take care of it.
   launcher_controller_->ActivateShellApp(app_id_, app_index_);
 }