Pass WebKit priority changes and parsing messages up to the browser process.

content/browser/loader/throttling_resource_handler.cc

Index: content/browser/loader/throttling_resource_handler.cc
diff --git a/content/browser/loader/throttling_resource_handler.cc b/content/browser/loader/throttling_resource_handler.cc
index 71bc17692d341f527d563b2d15f62c515224bf9c..27e10e3386e475e9c2ece6399d6a3a98e3abd7f7 100644
--- a/content/browser/loader/throttling_resource_handler.cc
+++ b/content/browser/loader/throttling_resource_handler.cc
@@ -101,6 +101,13 @@ bool ThrottlingResourceHandler::OnResponseStarted(int request_id,
   return next_handler_->OnResponseStarted(request_id, response, defer);
 }
 
+void ThrottlingResourceHandler::OnRequestPriorityChanged(int request_id) {
+  for (size_t i = 0; i < throttles_.size(); ++i) {
+    throttles_[i]->OnRequestPriorityChanged();
+  }
+  next_handler_->OnRequestPriorityChanged(request_id);
+}
+
 void ThrottlingResourceHandler::Cancel() {
   cancelled_by_resource_throttle_ = true;
   controller()->Cancel();