Merge pull request #3833 from atom/no-renderer-pump

Don't pump message loop when sending sync msg

atom/renderer/api/atom_api_renderer_ipc.cc

@@ -54,8 +54,6 @@ base::string16 SendSync(mate::Arguments* args,
 
   IPC::SyncMessage* message = new AtomViewHostMsg_Message_Sync(
       render_view->GetRoutingID(), channel, arguments, &json);
-  // Enable the UI thread in browser to receive messages.
-  message->EnableMessagePumping();
   bool success = render_view->Send(message);
 
   if (!success)

atom/renderer/api/lib/ipc-renderer.coffee

@@ -6,12 +6,6 @@ v8Util  = process.atomBinding 'v8_util'
 # Created by init.coffee.
 ipcRenderer = v8Util.getHiddenValue global, 'ipc'
 
-# Delay the callback to next tick in case the browser is still in the middle
-# of sending a message while the callback sends a sync message to browser,
-# which can fail sometimes.
-ipcRenderer.emit = (args...) ->
-  setTimeout (-> EventEmitter::emit.call ipcRenderer, args...), 0
-
 ipcRenderer.send = (args...) ->
   binding.send 'ipc-message', [args...]
 

atom/renderer/lib/inspector.coffee

@@ -27,7 +27,9 @@ convertToMenuTemplate = (items) ->
           label: item.label
           enabled: item.enabled
       if item.id?
-        transformed.click = -> DevToolsAPI.contextMenuItemSelected item.id
+        transformed.click = ->
+          DevToolsAPI.contextMenuItemSelected item.id
+          DevToolsAPI.contextMenuCleared()
       template.push transformed
   template
 
@@ -37,9 +39,7 @@ createMenu = (x, y, items, document) ->
 
   menu = Menu.buildFromTemplate convertToMenuTemplate(items)
   # The menu is expected to show asynchronously.
-  setImmediate ->
-    menu.popup remote.getCurrentWindow()
-    DevToolsAPI.contextMenuCleared()
+  setTimeout -> menu.popup remote.getCurrentWindow()
 
 showFileChooserDialog = (callback) ->
   {remote} = require 'electron'