compositor_unittests target is unimplmented on Mac

ui/gfx/native_theme_aura.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/native_theme_aura.h"
 
 #include "grit/gfx_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/size.h"
 #include "ui/gfx/skbitmap_operations.h"
 
 namespace {
 
 const SkColor kMenuBackgroundColor = SkColorSetRGB(0xed, 0xed, 0xed);
 
 }  // namespace
 
 namespace gfx {
 
 // static
 const NativeTheme* NativeTheme::instance() {
   return NativeThemeAura::instance();
 }
 
 // static
 const NativeThemeAura* NativeThemeAura::instance() {
-  static const NativeThemeAura s_native_theme;
+  CR_DEFINE_STATIC_LOCAL(NativeThemeAura, s_native_theme, ());
   return &s_native_theme;
 }
 
 NativeThemeAura::NativeThemeAura() {
 }
 
 NativeThemeAura::~NativeThemeAura() {
 }
 
 void NativeThemeAura::PaintMenuPopupBackground(
@@ skipping 129 matching lines @@
         SkBitmapOperations::CreateTransposedBtmap(*vertical_bitmap);
     SkBitmap* horizontal_bitmap = new SkBitmap(transposed_bitmap);
 
     horizontal_bitmaps_[resource_id] = horizontal_bitmap;
     return horizontal_bitmap;
   }
   return NULL;
 }
 
 }  // namespace gfx