Add desktop type context to most existing instances of FindTabbedBrowser.

chrome/browser/ui/ash/launcher/chrome_launcher_controller.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_controller.h"
 
 #include <set>
 #include <vector>
 
 #include "ash/launcher/launcher_model.h"
@@ skipping 541 matching lines @@
     if (id > 0) {
       // If the window is active, mark the app as active.
       SetItemStatus(id, app_state == APP_STATE_WINDOW_ACTIVE ?
           ash::STATUS_ACTIVE : ash::STATUS_RUNNING);
     }
   }
 }
 
 void ChromeLauncherController::CreateNewTab() {
   Browser* last_browser = browser::FindTabbedBrowser(
-      GetProfileForNewWindows(), true);
+      GetProfileForNewWindows(), true, chrome::HOST_DESKTOP_TYPE_ASH);
 
   if (!last_browser) {
     CreateNewWindow();
     return;
   }
 
   if (!IsActiveBrowserShowingNTP(last_browser))
     chrome::NewTab(last_browser);
 
   aura::Window* window = last_browser->window()->GetNativeWindow();
@@ skipping 415 matching lines @@
   if (current_tab) {
     content::NavigationEntry* active_entry =
         current_tab->GetController().GetActiveEntry();
     if (active_entry &&
         active_entry->GetURL() == GURL(chrome::kChromeUINewTabURL))
       return true;
   }
   return false;
 }