[Cleanup] Remove mac code from aura/ash/views

ui/aura/test/aura_test_helper.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 "ui/aura/test/aura_test_helper.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/default_capture_client.h"
@@ skipping 87 matching lines @@
   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, NULL);
 
 #if defined(USE_X11)
   ui::ResetXCursorCache();
 #endif
 
   Env::DeleteInstance();
 }
 
 void AuraTestHelper::RunAllPendingInMessageLoop() {
-#if !defined(OS_MACOSX)
   // TODO(jbates) crbug.com/134753 Find quitters of this RunLoop and have them
   //              use run_loop.QuitClosure().
   base::RunLoop run_loop(Env::GetInstance()->GetDispatcher());
   run_loop.RunUntilIdle();
-#endif
 }
 
 }  // namespace test
 }  // namespace aura