Initial views touchui Gesture Recognizer support

ui/views/widget/native_widget_delegate.h

Index: ui/views/widget/native_widget_delegate.h
diff --git a/ui/views/widget/native_widget_delegate.h b/ui/views/widget/native_widget_delegate.h
index 317374a08ca57adc7e019fd8bf2d14fd5b6a6374..4be47db43e1a7a219d6c5fe127ea96775289905d 100644
--- a/ui/views/widget/native_widget_delegate.h
+++ b/ui/views/widget/native_widget_delegate.h
@@ -17,6 +17,7 @@ class Size;
 
 namespace views {
 class InputMethod;
+class GestureEvent;
 class KeyEvent;
 class MouseEvent;
 class TouchEvent;
@@ -96,6 +97,7 @@ class VIEWS_EXPORT NativeWidgetDelegate {
   virtual bool OnMouseEvent(const MouseEvent& event) = 0;
   virtual void OnMouseCaptureLost() = 0;
   virtual ui::TouchStatus OnTouchEvent(const TouchEvent& event) = 0;
+  virtual ui::GestureStatus OnGestureEvent(const GestureEvent& event) = 0;
 
   // Runs the specified native command. Returns true if the command is handled.
   virtual bool ExecuteCommand(int command_id) = 0;