Improve detection of touch events when hiding media controls.

Source/core/events/MouseRelatedEvent.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef MouseRelatedEvent_h
 #define MouseRelatedEvent_h
 
 #include "core/events/UIEventWithKeyState.h"
+#include "platform/PlatformMouseEvent.h"
 #include "platform/geometry/LayoutPoint.h"
 
 namespace blink {
 
     // Internal only: Helper class for what's common between mouse and wheel events.
     class MouseRelatedEvent : public UIEventWithKeyState {
     public:
         // Note that these values are adjusted to counter the effects of zoom, so that values
         // exposed via DOM APIs are invariant under zooming.
         int screenX() const { return m_screenLocation.x(); }
         int screenY() const { return m_screenLocation.y(); }
         const IntPoint& screenLocation() const { return m_screenLocation; }
         int clientX() const { return m_clientLocation.x(); }
         int clientY() const { return m_clientLocation.y(); }
         int movementX() const { return m_movementDelta.x(); }
         int movementY() const { return m_movementDelta.y(); }
         const LayoutPoint& clientLocation() const { return m_clientLocation; }
         virtual int layerX() OVERRIDE FINAL;
         virtual int layerY() OVERRIDE FINAL;
         int offsetX();
         int offsetY();
         bool isSimulated() const { return m_isSimulated; }
+        bool fromTouch() const { return m_syntheticEventType == PlatformMouseEvent::FromTouch; }
         virtual int pageX() const OVERRIDE FINAL;
         virtual int pageY() const OVERRIDE FINAL;
         int x() const;
         int y() const;
 
         // Page point in "absolute" coordinates (i.e. post-zoomed, page-relative coords,
         // usable with RenderObject::absoluteToLocal).
         const LayoutPoint& absoluteLocation() const { return m_absoluteLocation; }
         void setAbsoluteLocation(const LayoutPoint& p) { m_absoluteLocation = p; }
 
         virtual void trace(Visitor*) OVERRIDE;
 
     protected:
         MouseRelatedEvent();
-        MouseRelatedEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView>,
-                          int detail, const IntPoint& screenLocation, const IntPoint& windowLocation,
-                          const IntPoint& movementDelta,
-                          bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool isSimulated = false);
+        MouseRelatedEvent(const AtomicString& type, bool canBubble, bool cancelable,
+            PassRefPtrWillBeRawPtr<AbstractView>, int detail, const IntPoint& screenLocation,
+            const IntPoint& windowLocation, const IntPoint& movementDelta, bool ctrlKey, bool altKey,
+            bool shiftKey, bool metaKey, bool isSimulated = false,
+            PlatformMouseEvent::SyntheticEventType = PlatformMouseEvent::NotFromTouch);
 
         void initCoordinates();
         void initCoordinates(const LayoutPoint& clientLocation);
         virtual void receivedTarget() OVERRIDE FINAL;
 
         void computePageLocation();
         void computeRelativePosition();
 
         // Expose these so MouseEvent::initMouseEvent can set them.
         IntPoint m_screenLocation;
         LayoutPoint m_clientLocation;
         LayoutPoint m_movementDelta;
 
     private:
         LayoutPoint m_pageLocation;
         LayoutPoint m_layerLocation;
         LayoutPoint m_offsetLocation;
         LayoutPoint m_absoluteLocation;
         bool m_isSimulated;
         bool m_hasCachedRelativePosition;
+        PlatformMouseEvent::SyntheticEventType m_syntheticEventType;
     };
 
 } // namespace blink
 
 #endif // MouseRelatedEvent_h