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

ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_zoom.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_BROWSER_PPP_ZOOM_H_
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_BROWSER_PPP_ZOOM_H_
 
 #include "native_client/src/include/nacl_macros.h"
 #include "ppapi/c/dev/ppp_zoom_dev.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 
 namespace ppapi_proxy {
 
 // Implements the trusted side of the PPP_Zoom_Dev interface.
 class BrowserZoom {
  public:
   static const PPP_Zoom_Dev* GetInterface();
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(BrowserZoom);
 };
 
 }  // namespace ppapi_proxy
 
 #endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_BROWSER_PPP_ZOOM_H_