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remoting/host/event_executor.h

 // Copyright (c) 2012 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_
 
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/host_event_stub.h"
 
 class MessageLoop;
 
+namespace base {
+class MessageLoopProxy;
+}  // namespace base
+
 namespace remoting {
 
 class Capturer;
 
 class EventExecutor : public protocol::HostEventStub {
  public:
-  // Creates default event executor for the current platform.
+  // Creates a default event executor for the current platform.
+  // This object should do as much work as possible on |message_loop|, using
+  // |ui_loop| only when necessary.
   static scoped_ptr<EventExecutor> Create(MessageLoop* message_loop,
+                                          base::MessageLoopProxy* ui_loop,
                                           Capturer* capturer);
 
   // Initialises any objects needed to execute events.
   virtual void OnSessionStarted() = 0;
 
   // Destroys any objects constructed by Start().
   virtual void OnSessionFinished() = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_EVENT_EXECUTOR_H_