Add two pixel-based compositor unittests.

ui/gfx/test/gfx_test_utils.cc

 // 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.
 
 #include "ui/gfx/test/gfx_test_utils.h"
 
 #if defined(VIEWS_COMPOSITOR)
 #include "base/command_line.h"
 #include "ui/gfx/compositor/compositor.h"
-#include "ui/gfx/compositor/test_compositor.h"
+#include "ui/gfx/compositor/test/test_compositor.h"
 #endif
 
 #if defined(VIEWS_COMPOSITOR)
 namespace switches {
 
 const char kDisableTestCompositor[] = "disable-test-compositor";
 
 }
 #endif
 
 namespace ui {
 namespace gfx_test_utils {
 
 void SetupTestCompositor() {
 #if defined(VIEWS_COMPOSITOR)
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableTestCompositor)) {
     // Use a mock compositor that noops draws.
     ui::Compositor::set_compositor_factory_for_testing(
         ui::TestCompositor::Create);
   }
 #endif
 }
 
 }  // namespace gfx_test_utils
 }  // namespace ui