Remove GestureEvent interface, and rename GestureEventImpl to GestureEvent.

ui/base/gestures/gesture_types.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_TYPES_H_
 #define UI_BASE_GESTURES_GESTURE_TYPES_H_
 
 #include "base/logging.h"
 #include "base/time.h"
 #include "ui/base/events.h"
 #include "ui/gfx/rect.h"
 
 namespace ui {
 
+class GestureEvent;
 class TouchEvent;
 
 struct UI_EXPORT GestureEventDetails {
  public:
   GestureEventDetails(EventType type, float delta_x, float delta_y);
 
   EventType type() const { return type_; }
 
   int touch_points() const { return touch_points_; }
   void set_touch_points(int touch_points) { touch_points_ = touch_points; }
@@ skipping 83 matching lines @@
     } generic;
   } data;
 
   int touch_points_;  // Number of active touch points in the gesture.
 
   // Bounding box is an axis-aligned rectangle that contains all the
   // enclosing rectangles of the touch-points in the gesture.
   gfx::Rect bounding_box_;
 };
 
-// An abstract type to represent gesture-events.
-class UI_EXPORT GestureEvent {
- public:
-  virtual ~GestureEvent() {}
-
-  // A gesture event can have multiple touches. This function should return the
-  // lowest ID of the touches in this gesture.
-  virtual int GetLowestTouchId() const = 0;
-
-  // A helper function used in several (all) derived classes.
-  // Returns lowest set bit, or -1 if no bits are set.
-  static int LowestBit(unsigned int bitfield) {
-    int i = -1;
-    // Find the index of the least significant 1 bit
-    while (bitfield && (!((1 << ++i) & bitfield)));
-    return i;
-  }
-};
-
 // An abstract type for consumers of gesture-events created by the
 // gesture-recognizer.
 class UI_EXPORT GestureConsumer {
  public:
   GestureConsumer()
       : ignores_events_(false) {
   }
 
   explicit GestureConsumer(bool ignores_events)
       : ignores_events_(ignores_events) {
@@ skipping 29 matching lines @@
                                            int touch_id,
                                            base::TimeDelta time_stamp) = 0;
 
   virtual bool DispatchLongPressGestureEvent(GestureEvent* event) = 0;
   virtual bool DispatchCancelTouchEvent(TouchEvent* event) = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_GESTURES_GESTURE_TYPES_H_