Remaining bits to get views_examples_with_content_exe to work on Mac

ui/native_theme/native_theme_mac.h

 // Copyright (c) 2013 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.
 
 #ifndef UI_NATIVE_THEME_NATIVE_THEME_MAC_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_MAC_H_
 
-#include "ui/native_theme/native_theme_base.h"
+#include "ui/native_theme/fallback_theme.h"
+#include "ui/native_theme/native_theme_export.h"
 
 namespace ui {
 
 // Mac implementation of native theme support.
-class NativeThemeMac : public NativeThemeBase {
+// TODO(tapted): This should not use FallbackTheme.
+class NativeThemeMac : public FallbackTheme {
  public:
   static NativeThemeMac* instance();
 
   virtual SkColor GetSystemColor(ColorId color_id) const OVERRIDE;
 
  private:
   NativeThemeMac();
   virtual ~NativeThemeMac();
 
   DISALLOW_COPY_AND_ASSIGN(NativeThemeMac);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_MAC_H_