Add two pixel-based compositor unittests.

ui/gfx/compositor/test_suite.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/compositor/test_suite.h"
-
-#include "base/message_loop.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/base/ui_base_paths.h"
-#include "ui/gfx/compositor/compositor_test_support.h"
-#include "ui/gfx/gfx_paths.h"
-#include "ui/gfx/gl/gl_implementation.h"
-
-#if defined(USE_WEBKIT_COMPOSITOR)
-#include "ui/gfx/compositor/compositor_cc.h"
-#endif
-
-CompositorTestSuite::CompositorTestSuite(int argc, char** argv)
-    : TestSuite(argc, argv) {}
-
-CompositorTestSuite::~CompositorTestSuite() {}
-
-void CompositorTestSuite::Initialize() {
-#if defined(OS_LINUX)
-  gfx::InitializeGLBindings(gfx::kGLImplementationOSMesaGL);
-#endif
-  base::TestSuite::Initialize();
-
-  gfx::RegisterPathProvider();
-  ui::RegisterPathProvider();
-
-  // Force unittests to run using en-US so if we test against string
-  // output, it'll pass regardless of the system language.
-  ui::ResourceBundle::InitSharedInstance("en-US");
-
-  message_loop_.reset(new MessageLoop(MessageLoop::TYPE_UI));
-  ui::CompositorTestSupport::Initialize();
-}
-
-void CompositorTestSuite::Shutdown() {
-  ui::CompositorTestSupport::Terminate();
-  message_loop_.reset();
-
-  ui::ResourceBundle::CleanupSharedInstance();
-
-  base::TestSuite::Shutdown();
-}