Fix unused private field errors in components/nacl/.

components/nacl/loader/nacl_main_platform_delegate.h

 // Copyright 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 CHROME_NACL_NACL_MAIN_PLATFORM_DELEGATE_H_
 #define CHROME_NACL_NACL_MAIN_PLATFORM_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "content/public/common/main_function_params.h"
 
 class NaClMainPlatformDelegate {
  public:
   explicit NaClMainPlatformDelegate(
       const content::MainFunctionParams& parameters);
   ~NaClMainPlatformDelegate();
 
   // Initiate Lockdown.
   void EnableSandbox();

[jvoung (off chromium), 2015/07/06 19:31:31]

I wonder if it's cleaner to just pass the parameters to EnableSandbox, instead
of stashing it.

Then the windows impl can use that parameter, while the others just don't use
the parameter, and we can avoid the if defined(OS_WIN) below.

[mlamouri (slow - plz ping), 2015/07/06 20:21:23]

Done.

 
  private:
+#if defined(OS_WIN)
   const content::MainFunctionParams& parameters_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(NaClMainPlatformDelegate);
 };
 
 #endif  // CHROME_NACL_NACL_MAIN_PLATFORM_DELEGATE_H_