Fix memory leak in ~GestureRecognizerImpl

ui/base/gestures/gesture_recognizer_impl.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 UI_BASE_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 #define UI_BASE_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 
 #include <map>
 #include <queue>
 #include <vector>
@@ skipping 41 matching lines @@
       ui::TouchStatus status,
       GestureConsumer* target) OVERRIDE;
   virtual void QueueTouchEventForGesture(GestureConsumer* consumer,
                                          const TouchEvent& event) OVERRIDE;
   virtual Gestures* AdvanceTouchQueue(GestureConsumer* consumer,
                                       bool processed) OVERRIDE;
   virtual void FlushTouchQueue(GestureConsumer* consumer) OVERRIDE;
 
   typedef std::queue<TouchEvent*> TouchEventQueue;
   std::map<GestureConsumer*, TouchEventQueue*> event_queue_;
-  std::map<GestureConsumer*, GestureSequence*> consumer_sequence_;
+  std::map<GestureConsumer*, scoped_ptr<GestureSequence>> consumer_sequence_;

[girard, 2012/08/02 17:14:20]

Changed to scoped_ptr.  This ensures that during  ~GestureRecognizerImpl all of
these GestureSequence objects will be deleted.  The GestureSequence contains a
timed callback, and a pointer to a helper.  The helper pointer is not valid
after the GR's destruction.

 
   // Both |touch_id_target_| and |touch_id_target_for_gestures_| map a touch-id
   // to its target window.  touch-ids are removed from |touch_id_target_| on
   // ET_TOUCH_RELEASE and ET_TOUCH_CANCEL. |touch_id_target_for_gestures_| are
   // removed in FlushTouchQueue().
   TouchIdToConsumerMap touch_id_target_;
   TouchIdToConsumerMap touch_id_target_for_gestures_;
 
   // Touches cancelled by touch capture are routed to the
   // gesture_consumer_ignorer_.
   scoped_ptr<GestureConsumer> gesture_consumer_ignorer_;
   GestureEventHelper* helper_;
 
   DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImpl);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_GESTURES_GESTURE_RECOGNIZER_IMPL_H_