Pepper: Move FileRef to the "new" resource proxy.

content/renderer/pepper/pepper_url_loader_host.cc

Index: content/renderer/pepper/pepper_url_loader_host.cc
diff --git a/content/renderer/pepper/pepper_url_loader_host.cc b/content/renderer/pepper/pepper_url_loader_host.cc
index 8343f1934eac238412cbecf3e05912718c9a6886..052f395294c96f42777c563d5866f2211063711d 100644
--- a/content/renderer/pepper/pepper_url_loader_host.cc
+++ b/content/renderer/pepper/pepper_url_loader_host.cc
@@ -250,8 +250,12 @@ int32_t PepperURLLoaderHost::InternalOnHostMsgOpen(
   if (!frame)
     return PP_ERROR_FAILED;
   WebURLRequest web_request;
-  if (!CreateWebURLRequest(&filled_in_request_data, frame, &web_request))
+  if (!CreateWebURLRequest(pp_instance(),
+                           &filled_in_request_data,
+                           frame,
+                           &web_request)) {
     return PP_ERROR_FAILED;
+  }
   web_request.setRequestorProcessID(renderer_ppapi_host_->GetPluginPID());
 
   WebURLLoaderOptions options;