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

remoting/host/event_executor.h

 // 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.
 
 #ifndef REMOTING_HOST_EVENT_EXECUTOR_H_
 #define REMOTING_HOST_EVENT_EXECUTOR_H_
 
-class MessageLoop;
+class MessageLoopForUI;
 
 namespace remoting {
 
 class Capturer;
 
 namespace protocol {
 class InputStub;
 }  // namespace protocol
 
 // Creates default event executor for the current platform.
-protocol::InputStub* CreateEventExecutor(MessageLoop* message_loop,
+protocol::InputStub* CreateEventExecutor(MessageLoopForUI* message_loop,
                                          Capturer* capturer);
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_EVENT_EXECUTOR_H_