Fix "unused variable" warnings.

content/renderer/renderer_main_platform_delegate.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDERER_MAIN_PLATFORM_DELEGATE_H_
 #define CONTENT_RENDERER_RENDERER_MAIN_PLATFORM_DELEGATE_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/public/common/main_function_params.h"
 
-#ifdef __OBJC__
-@class NSBundle;
-#else
-class NSBundle;
-#endif  // __OBJC__
-
 namespace content {
 
 class CONTENT_EXPORT RendererMainPlatformDelegate {
  public:
   explicit RendererMainPlatformDelegate(
       const MainFunctionParams& parameters);
   ~RendererMainPlatformDelegate();
 
   // Called first thing and last thing in the process' lifecycle, i.e. before
   // the sandbox is enabled.
   void PlatformInitialize();
   void PlatformUninitialize();
 
   // Initiate Lockdown, returns true on success.
   bool EnableSandbox();
 
  private:
 #if defined(OS_WIN)
   const MainFunctionParams& parameters_;
-  HMODULE sandbox_test_module_;
-#elif defined(OS_MACOSX)
-  NSBundle* sandbox_tests_bundle_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RendererMainPlatformDelegate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_MAIN_PLATFORM_DELEGATE_H_