Let Chrome app handle Ash accelerators first if the app is launched as a window

ash/test/test_shell_delegate.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 "ash/test/test_shell_delegate.h"
 
 #include <algorithm>
 
 #include "ash/screenshot_delegate.h"
 #include "ash/shell.h"
@@ skipping 29 matching lines @@
 
 void TestShellDelegate::Shutdown() {
 }
 
 void TestShellDelegate::Exit() {
 }
 
 void TestShellDelegate::NewWindow(bool incognito) {
 }
 
+bool TestShellDelegate::IsBrowserWindow(const aura::Window* window) {
+  return false;
+}
+
 void TestShellDelegate::Search() {
 }
 
 void TestShellDelegate::OpenFileManager() {
 }
 
 void TestShellDelegate::OpenCrosh() {
 }
 
 void TestShellDelegate::OpenMobileSetup() {
@@ skipping 18 matching lines @@
     SystemTray* tray) {
   return NULL;
 }
 
 UserWallpaperDelegate* TestShellDelegate::CreateUserWallpaperDelegate() {
   return NULL;
 }
 
 }  // namespace test
 }  // namespace ash