From ce569ebf78207f7385bb725d9343d7ab7fb6d5fb Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Wed, 10 Jul 2013 12:36:02 +0800
Subject: [PATCH] Enable the UI thread in browser to receive synchronous
 messages.

This is required to send synchronous message from renderer to browser.
---
 renderer/api/atom_api_renderer_ipc.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/renderer/api/atom_api_renderer_ipc.cc b/renderer/api/atom_api_renderer_ipc.cc
index cc2cc7cfc908..022ad28741d2 100644
--- a/renderer/api/atom_api_renderer_ipc.cc
+++ b/renderer/api/atom_api_renderer_ipc.cc
@@ -98,11 +98,14 @@ v8::Handle<v8::Value> RendererIPC::SendSync(const v8::Arguments &args) {
   RenderView* render_view = GetCurrentRenderView();
 
   base::DictionaryValue result;
-  bool success = render_view->Send(new AtomViewHostMsg_Message_Sync(
+  IPC::SyncMessage* message = new AtomViewHostMsg_Message_Sync(
       render_view->GetRoutingID(),
       channel,
       *static_cast<base::ListValue*>(arguments.get()),
-      &result));
+      &result);
+  // Enable the UI thread in browser to receive messages.
+  message->EnableMessagePumping();
+  bool success = render_view->Send(message);
 
   if (!success)
     return node::ThrowError("Unable to send AtomViewHostMsg_Message_Sync");