Update Native Client Authors to be Chromium Authors for the code moved from the

ppapi/native_client/src/shared/ppapi_proxy/object_serialize.cc

 /*
- * Copyright (c) 2011 The Native Client Authors. All rights reserved.
+ * 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 "native_client/src/shared/ppapi_proxy/object_serialize.h"
 
 #include <limits>
 #include <stdio.h>
 #include <string.h>
 
@@ skipping 446 matching lines @@
     return false;
   }
   // Read the serialized PP_Vars into the allocated memory.
   if (!DeserializePpVar(channel, bytes, length, vars, argc)) {
     return false;
   }
   return true;
 }
 
 }  // namespace ppapi_proxy