Remove unnecessary use of HeapHashMap for EventHandler::TouchRegionMap.

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

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 448 matching lines @@
     IntPoint m_lastKnownMousePosition;
     IntPoint m_lastKnownMouseGlobalPosition;
     IntPoint m_mouseDownPos; // In our view's coords.
     double m_mouseDownTimestamp;
     PlatformMouseEvent m_mouseDown;
     RefPtr<UserGestureToken> m_lastMouseDownUserGestureToken;
 
     // The target of each active touch point indexed by the touch ID.
     using TouchTargetMap = HeapHashMap<unsigned, Member<EventTarget>, DefaultHash<unsigned>::Hash, WTF::UnsignedWithZeroKeyHashTraits<unsigned>>;
     TouchTargetMap m_targetForTouchID;
-    using TouchRegionMap = HeapHashMap<unsigned, String, DefaultHash<unsigned>::Hash, WTF::UnsignedWithZeroKeyHashTraits<unsigned>>;
+    using TouchRegionMap = HashMap<unsigned, String, DefaultHash<unsigned>::Hash, WTF::UnsignedWithZeroKeyHashTraits<unsigned>>;
     TouchRegionMap m_regionForTouchID;
 
     // If set, the document of the active touch sequence. Unset if no touch sequence active.
     Member<Document> m_touchSequenceDocument;
     RefPtr<UserGestureToken> m_touchSequenceUserGestureToken;
 
     bool m_touchPressed;
 
     PointerEventManager m_pointerEventManager;
 
@@ skipping 22 matching lines @@
     // scroll which shouldn't propagate can't cause any element to
     // scroll other than the |m_previousGestureScrolledNode|.
     bool m_deltaConsumedForScrollSequence;
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::EventHandler::TouchInfo);
 
 #endif // EventHandler_h