Implement the gamepad API in the IPC proxy

content/renderer/pepper/pepper_file_chooser_host.cc

Index: content/renderer/pepper/pepper_file_chooser_host.cc
diff --git a/content/renderer/pepper/pepper_file_chooser_host.cc b/content/renderer/pepper/pepper_file_chooser_host.cc
index 4d1515139fffa64f5f8b10a4049a3ef943c0bb2f..f4faa9f2c6aec5ce28ce343bb79f24cfa6b64cd4 100644
--- a/content/renderer/pepper/pepper_file_chooser_host.cc
+++ b/content/renderer/pepper/pepper_file_chooser_host.cc
@@ -166,9 +166,7 @@ int32_t PepperFileChooserHost::OnMsgShow(
     return PP_ERROR_NOACCESS;
   }
 
-  reply_params_ = ppapi::proxy::ResourceMessageReplyParams(
-      context->params.pp_resource(),
-      context->params.sequence());
+  reply_params_ = context->MakeReplyParams();
   return PP_OK_COMPLETIONPENDING;
 }