Run event executor on the ui thread to remove the need to explicitly XFlush() the XTest calls.

remoting/host/chromoting_host_context.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/chromoting_host_context.h"
 
 #include <string>
 
 #include "base/threading/thread.h"
 #include "remoting/jingle_glue/jingle_thread.h"
 
 namespace remoting {
 
-ChromotingHostContext::ChromotingHostContext()
+ChromotingHostContext::ChromotingHostContext(MessageLoop* ui_message_loop)
     : main_thread_("ChromotingMainThread"),
-      encode_thread_("ChromotingEncodeThread") {
+      encode_thread_("ChromotingEncodeThread"),
+      ui_message_loop_(ui_message_loop) {
 }
 
 ChromotingHostContext::~ChromotingHostContext() {
 }
 
 void ChromotingHostContext::Start() {
   // Start all the threads.
   main_thread_.Start();
   encode_thread_.Start();
   jingle_thread_.Start();
@@ skipping 15 matching lines @@
 }
 
 MessageLoop* ChromotingHostContext::encode_message_loop() {
   return encode_thread_.message_loop();
 }
 
 MessageLoop* ChromotingHostContext::network_message_loop() {
   return jingle_thread_.message_loop();
 }
 
+MessageLoop* ChromotingHostContext::ui_message_loop() {
+  return ui_message_loop_;
+}
+
 }  // namespace remoting