[NaCl SDK] Consistent use of copyright header.

native_client_sdk/src/libraries/nacl_io/real_pepper_interface.cc

-/* 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.
- */
+// 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.
 
 #include "nacl_io/real_pepper_interface.h"
 #include <assert.h>
 #include <stdio.h>
 
 #include <ppapi/c/pp_errors.h>
 
 namespace nacl_io {
 
 #include "nacl_io/pepper/undef_macros.h"
@@ skipping 118 matching lines @@
       result = message_loop_interface_->AttachToCurrentThread(message_loop);
       assert(result == PP_OK);
     }
   }
 
   return PP_OK;
 }
 
 }  // namespace nacl_io