Do not scale cursor image for 2x image

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 76 matching lines @@
   stacking_client_.reset();
   capture_client_.reset();
   focus_client_.reset();
   client::SetFocusClient(root_window(), NULL);
   host_.reset();
   ui::GestureRecognizer::Reset();
   test_screen_.reset();
   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, NULL);
 
 #if defined(USE_X11)
-  ui::ResetXCursorCache();
+  ui::test::ResetXCursorCache();
 #endif
 
   ui::ShutdownInputMethodForTesting();
 
   Env::DeleteInstance();
 }
 
 void AuraTestHelper::RunAllPendingInMessageLoop() {
   // TODO(jbates) crbug.com/134753 Find quitters of this RunLoop and have them
   //              use run_loop.QuitClosure().
   base::RunLoop run_loop;
   run_loop.RunUntilIdle();
 }
 
 }  // namespace test
 }  // namespace aura