Added PointerEvent.hasPointerCapture API.

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 1473 matching lines @@
 {
     // TODO(crbug.com/591387): This functionality should be per page not per frame.
     m_pointerEventManager.setPointerCapture(pointerId, target);
 }
 
 void EventHandler::releasePointerCapture(int pointerId, EventTarget* target)
 {
     m_pointerEventManager.releasePointerCapture(pointerId, target);
 }
 
+bool EventHandler::hasPointerCapture(int pointerId, EventTarget* target)
+{
+    return m_pointerEventManager.hasPointerCapture(pointerId, target);
+}
+
 void EventHandler::elementRemoved(EventTarget* target)
 {
     m_pointerEventManager.elementRemoved(target);
 }
 
 // TODO(mustaq): Make PE drive ME dispatch & bookkeeping in EventHandler.
 WebInputEventResult EventHandler::updatePointerTargetAndDispatchEvents(const AtomicString& mouseEventType, Node* targetNode, int clickCount, const PlatformMouseEvent& mouseEvent)
 {
     ASSERT(mouseEventType == EventTypeNames::mousedown
         || mouseEventType == EventTypeNames::mousemove
@@ skipping 1083 matching lines @@
 
 FrameHost* EventHandler::frameHost() const
 {
     if (!m_frame->page())
         return nullptr;
 
     return &m_frame->page()->frameHost();
 }
 
 } // namespace blink