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

ppapi/native_client/src/shared/ppapi_proxy/plugin_nacl_file.h

 /*
-  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.
 */
 
 #ifndef NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_NACL_FILE_H
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_NACL_FILE_H
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 
 namespace ppapi_proxy {
 
 // Loads |url| asynchronously notifying the |callback| of the final result.
 // If the call cannot be completed asynchronously, |callback|
 // will not be invoked. Returns one of the PP_ERROR codes.
 int32_t StreamAsFile(PP_Instance instance,
                      const char* url,
                      struct PP_CompletionCallback callback);
 
 // Returns an open file descriptor for a |url| loaded using StreamAsFile()
 // or -1 if it has not been loaded.
 int GetFileDesc(PP_Instance instance,
                 const char* url);
 
 }  // namespace ppapi_proxy
 
 #endif /*  NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_NACL_FILE_H */