app_list: Fix app_list_unittests crash.

ui/app_list/test/app_list_test_suite.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/app_list/test/app_list_test_suite.h"
 
 #include "ui/base/ui_base_paths.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/compositor/compositor_setup.h"
+#include "ui/compositor/test/compositor_test_support.h"
 
 namespace app_list {
 namespace test {
 
 AppListTestSuite::AppListTestSuite(int argc, char** argv)
     : base::TestSuite(argc, argv) {
 }
 
 void AppListTestSuite::Initialize() {
   base::TestSuite::Initialize();
 
   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::InitSharedInstanceWithLocale("en-US", NULL);
+
+  ui::CompositorTestSupport::Initialize();
+  ui::SetupTestCompositor();
 }
 
 void AppListTestSuite::Shutdown() {
+  ui::CompositorTestSupport::Terminate();
   ui::ResourceBundle::CleanupSharedInstance();
 
   base::TestSuite::Shutdown();
 }
 
 }  // namespace test
 }  // namespace app_list