base::Bind: Cleanup in automation.

chrome/browser/automation/ui_controls_internal.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 CHROME_BROWSER_AUTOMATION_UI_CONTROLS_INTERNAL_H_
 #define CHROME_BROWSER_AUTOMATION_UI_CONTROLS_INTERNAL_H_
 
-#include "base/task.h"
+#include "base/callback.h"
 #include "chrome/browser/automation/ui_controls.h"
 
 namespace ui_controls {
 
 // A utility class to send a mouse click event in a task.
 // It's shared by ui_controls_linux.cc and ui_controls_mac.cc
-class ClickTask : public Task {
+class ClickTask : public base::Closure {
  public:
-  // A |followup| Task can be specified to notify the caller when the mouse
-  // click event is sent. If can be NULL if the caller does not care about it.
-  ClickTask(MouseButton button, int state, Task* followup);
+  // A |followup| closure can be specified to notify the caller when the mouse
+  // click event is sent. It can be null if the caller does not care about it.
+  ClickTask(MouseButton button, int state, const base::Closure& followup);
   virtual ~ClickTask();
   virtual void Run();
 
  private:
   MouseButton button_;
   int state_;
-  Task* followup_;
+  base::Closure followup_;
 };
 
 }  // namespace ui_controls
 
 #endif  // CHROME_BROWSER_AUTOMATION_UI_CONTROLS_INTERNAL_H_