compositor_unittests target is unimplmented on Mac

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"
@@ skipping 12 matching lines @@
 
 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();
 }