Expose native, desktop and mobile gesture detection defaults

ui/events/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_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 #define UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 41 matching lines @@
   virtual GestureProviderAura* GetGestureProviderForConsumer(
       GestureConsumer* c);
 
  private:
   // Sets up the target consumer for gestures based on the touch-event.
   void SetupTargets(const TouchEvent& event, GestureConsumer* consumer);
 
   void DispatchGestureEvent(GestureEvent* event);
 
   // Overridden from GestureRecognizer
-  virtual bool ProcessTouchEventPreDispatch(const TouchEvent& event,
+  virtual bool ProcessTouchEventPreDispatch(TouchEvent* event,
                                             GestureConsumer* consumer) override;
 
   virtual Gestures* ProcessTouchEventPostDispatch(
       const TouchEvent& event,
       ui::EventResult result,
       GestureConsumer* consumer) override;
 
   virtual Gestures* ProcessTouchEventOnAsyncAck(
       const TouchEvent& event,
       ui::EventResult result,
@@ skipping 24 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImpl);
 };
 
 // Provided only for testing:
 EVENTS_EXPORT void SetGestureRecognizerForTesting(
     GestureRecognizer* gesture_recognizer);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_