Makes tests either use mock compositor or mock WebGraphicsContext3D

ui/gfx/test/gfx_test_utils.h

Index: ui/gfx/test/gfx_test_utils.h
diff --git a/ui/gfx/test/gfx_test_utils.h b/ui/gfx/test/gfx_test_utils.h
deleted file mode 100644
index da2b2bec3780d2addea5c66e058f8a6f86cbd1cd..0000000000000000000000000000000000000000
--- a/ui/gfx/test/gfx_test_utils.h
+++ /dev/null
@@ -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_