Improve Material ink effects

sky/engine/core/events/GestureEvent.h

 // Copyright 2015 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 SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_
 #define SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_
 
 #include "sky/engine/core/events/Event.h"
 #include "sky/engine/public/platform/WebInputEvent.h"
 
 namespace blink {
 
 struct GestureEventInit : public EventInit {
+    int primaryPointer = 0;
     double x = 0;
     double y = 0;
     double dx = 0;
     double dy = 0;
     double velocityX = 0;
     double velocityY = 0;
 };
 
 class GestureEvent : public Event {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtr<GestureEvent> create()
     {
         return adoptRef(new GestureEvent);
     }
     static PassRefPtr<GestureEvent> create(const WebGestureEvent& event)
     {
         return adoptRef(new GestureEvent(event));
     }
     static PassRefPtr<GestureEvent> create(const AtomicString& type, const GestureEventInit& initializer)
     {
         return adoptRef(new GestureEvent(type, initializer));
     }
 
     ~GestureEvent() override;
     const AtomicString& interfaceName() const override;
 
+    int primaryPointer() const { return m_primaryPointer; }

[eseidel, 2015/03/19 18:00:36]

dart 'get' has spoiled me.

     float x() const { return m_x; }
     float y() const { return m_y; }
     float dx() const { return m_dx; }
     float dy() const { return m_dy; }
     float velocityX() const { return m_velocityX; }
     float velocityY() const { return m_velocityY; }
 
 private:
     GestureEvent();
     explicit GestureEvent(const WebGestureEvent&);
     GestureEvent(const AtomicString& type, const GestureEventInit&);
 
+    int m_primaryPointer;
     float m_x;
     float m_y;
     float m_dx;
     float m_dy;
     float m_velocityX;
     float m_velocityY;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_