Revert 107563 - Fix up compositor mocking.

ui/gfx/test/gfx_test_utils.h

Index: ui/gfx/test/gfx_test_utils.h
===================================================================
--- ui/gfx/test/gfx_test_utils.h	(revision 107563)
+++ ui/gfx/test/gfx_test_utils.h	(working copy)
@@ -1,19 +0,0 @@
-// Copyright (c) 2011 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.
-
-#ifndef UI_GFX_GFX_TEST_UTILS_H_
-#define UI_GFX_GFX_TEST_UTILS_H_
-#pragma once
-
-namespace ui {
-namespace gfx_test_utils {
-
-// Called by tests that want to use a mocked compositor.
-// Implementation is no-oped on platforms that don't use a compositor.
-void SetupTestCompositor();
-
-}  // namespace gfx_test_utils
-}  // namespace ui
-
-#endif  // UI_GFX_GFX_TEST_UTILS_H_