resources: Prevent including the same resource in multiple pack files.

ash/test/ash_test_helper.cc

 // Copyright 2013 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/ash_test_helper.h"
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
 #include "ash/shell_init_params.h"
@@ skipping 108 matching lines @@
 
   // Remove global message center state.
   message_center::MessageCenter::Shutdown();
 
 #if defined(OS_CHROMEOS)
   chromeos::CrasAudioHandler::Shutdown();
   if (dbus_thread_manager_initialized_) {
     chromeos::DBusThreadManager::Shutdown();
     dbus_thread_manager_initialized_ = false;
   }
-  keyboard::ResetKeyboardForTesting();
 #endif
 
   aura::Env::DeleteInstance();
   ui::TerminateContextFactoryForTests();
 
   // Need to reset the initial login status.
   TestSystemTrayDelegate::SetInitialLoginStatus(user::LOGGED_IN_USER);
 
   ui::ShutdownInputMethodForTesting();
   zero_duration_mode_.reset();
@@ skipping 38 matching lines @@
 bool AshTestHelper::SupportsHostWindowResize() {
 #if defined(OS_WIN)
   return false;
 #else
   return true;
 #endif
 }
 
 }  // namespace test
 }  // namespace ash