base::Bind: Cleanup in automation.

chrome/browser/automation/ui_controls_mac.mm

 // Copyright (c) 2011 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 "chrome/browser/automation/ui_controls.h"
 
 #import <Cocoa/Cocoa.h>
 #include <mach/mach_time.h>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/message_loop.h"
 #include "chrome/browser/automation/ui_controls_internal.h"
 #include "content/browser/browser_thread.h"
 #include "ui/base/keycodes/keyboard_code_conversion_mac.h"
 
 // Implementation details: We use [NSApplication sendEvent:] instead
 // of [NSApplication postEvent:atStart:] so that the event gets sent
 // immediately.  This lets us run the post-event task right
 // immediately as well.  Unfortunately I cannot subclass NSEvent (it's
 // probably a class cluster) to allow other easy answers.  For
@@ skipping 161 matching lines @@
   if (control) {
     flags &= ~NSControlKeyMask;
     event = SynthesizeKeyEvent(window, false, ui::VKEY_CONTROL, flags);
     DCHECK(event);
     events->push_back(event);
   }
 }
 
 // A task class to watch for the event queue. The specific task will be fired
 // when there is no more event in the queue.
-class EventQueueWatcher : public Task {
+class EventQueueWatcher : public base::Closure {
  public:
-  EventQueueWatcher(Task* task) : task_(task) {}
-
+  EventQueueWatcher(const base::Closure& task) : task_(task) {}
   virtual ~EventQueueWatcher() {}
 
   virtual void Run() {
     NSEvent* event = [NSApp nextEventMatchingMask:NSAnyEventMask
                                         untilDate:nil
                                            inMode:NSDefaultRunLoopMode
                                           dequeue:NO];
     // If there is still event in the queue, then we need to check again.
     if (event)
-      MessageLoop::current()->PostTask(FROM_HERE, new EventQueueWatcher(task_));
+      MessageLoop::current()->PostTask(FROM_HERE, EventQueueWatcher(task_));
     else
       MessageLoop::current()->PostTask(FROM_HERE, task_);
   }
 
  private:
-  Task* task_;
+  base::Closure task_;
 };
 
 // Stores the current mouse location on the screen. So that we can use it
 // when firing keyboard and mouse click events.
 NSPoint g_mouse_location = { 0, 0 };
 
 }  // anonymous namespace
 
 
 namespace ui_controls {
 
 bool SendKeyPress(gfx::NativeWindow window,
                   ui::KeyboardCode key,
                   bool control,
                   bool shift,
                   bool alt,
                   bool command) {
   return SendKeyPressNotifyWhenDone(window, key,
                                     control, shift, alt, command,
-                                    NULL);
+                                    base::Closure());
 }
 
 // Win and Linux implement a SendKeyPress() this as a
 // SendKeyPressAndRelease(), so we should as well (despite the name).
 bool SendKeyPressNotifyWhenDone(gfx::NativeWindow window,
                                 ui::KeyboardCode key,
                                 bool control,
                                 bool shift,
                                 bool alt,
                                 bool command,
-                                Task* task) {
+                                const base::Closure& task) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   std::vector<NSEvent*> events;
   SynthesizeKeyEventsSequence(
       window, key, control, shift, alt, command, &events);
 
   // TODO(suzhe): Using [NSApplication postEvent:atStart:] here causes
   // BrowserKeyEventsTest.CommandKeyEvents to fail. See http://crbug.com/49270
   // But using [NSApplication sendEvent:] should be safe for keyboard events,
   // because until now, no code wants to retrieve the next event when handling
@@ skipping 101 matching lines @@
 }
 
 bool SendMouseClick(MouseButton type) {
  return SendMouseEventsNotifyWhenDone(type, UP|DOWN, NULL);
 }
 
 void MoveMouseToCenterAndPress(
     NSView* view,
     MouseButton button,
     int state,
-    Task* task) {
+    const base::Closure& task) {
   DCHECK(view);
   NSWindow* window = [view window];
   DCHECK(window);
   NSScreen* screen = [window screen];
   DCHECK(screen);
 
   // Converts the center position of the view into the coordinates accepted
   // by SendMouseMoveNotifyWhenDone() method.
   NSRect bounds = [view bounds];
   NSPoint center = NSMakePoint(NSMidX(bounds), NSMidY(bounds));
   center = [view convertPoint:center toView:nil];
   center = [window convertBaseToScreen:center];
   center = NSMakePoint(center.x, [screen frame].size.height - center.y);
 
   SendMouseMoveNotifyWhenDone(center.x, center.y,
-                              new ClickTask(button, state, task));
+                              ClickTask(button, state, task));
 }
 
 }  // ui_controls