Fixed memory issues with EventHandler::TouchInfo.

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 183 matching lines @@
     bool useHandCursor(Node*, bool isOverLink);
 
     void notifyElementActivated();
 
     PassRefPtr<UserGestureToken> takeLastMouseDownGestureToken() { return m_lastMouseDownUserGestureToken.release(); }
 
     int clickCount() { return m_clickCount; }
 
     SelectionController& selectionController() const { return *m_selectionController; }
 
+    class TouchInfo {
+        ALLOW_ONLY_INLINE_ALLOCATION();
+    public:
+        DEFINE_INLINE_TRACE()
+        {
+            visitor->trace(touchTarget);
+            visitor->trace(targetFrame);
+        }
+
+        PlatformTouchPoint point;
+        RefPtrWillBeMember<EventTarget> touchTarget;
+        RefPtrWillBeMember<LocalFrame> targetFrame;
+        FloatPoint adjustedPagePoint;
+        FloatSize adjustedRadius;
+        bool knownTarget;
+        bool consumed;
+    };
+
 private:
     static DragState& dragState();
 
     DataTransfer* createDraggingDataTransfer() const;
 
     bool handleMouseMoveOrLeaveEvent(const PlatformMouseEvent&, HitTestResult* hoveredNode = nullptr, bool onlyUpdateScrollbars = false, bool forceLeave = false);
     bool handleMousePressEvent(const MouseEventWithHitTestResults&);
     bool handleMouseFocus(const MouseEventWithHitTestResults&);
     bool handleMouseDraggedEvent(const MouseEventWithHitTestResults&);
     bool handleMouseReleaseEvent(const MouseEventWithHitTestResults&);
@@ skipping 97 matching lines @@
     bool panScrollInProgress() const;
     void setLastKnownMousePosition(const PlatformMouseEvent&);
 
     bool shouldTopControlsConsumeScroll(FloatSize) const;
 
     // If the given element is a shadow host and its root has delegatesFocus=false flag,
     // slide focus to its inner element. Returns true if the resulting focus is different from
     // the given element.
     bool slideFocusOnShadowHostIfNecessary(const Element&);
 
-    using TouchInfo = struct {
-        PlatformTouchPoint point;
-        EventTarget* touchTarget;
-        LocalFrame* targetFrame;
-        FloatPoint adjustedPagePoint;
-        FloatSize adjustedRadius;
-        bool knownTarget;
-        bool consumed;
-    };
-
-    void dispatchPointerEventsForTouchEvent(const PlatformTouchEvent&, Vector<TouchInfo>&);
-    bool dispatchTouchEvents(const PlatformTouchEvent&, Vector<TouchInfo>&, bool, bool);
+    void dispatchPointerEventsForTouchEvent(const PlatformTouchEvent&, WillBeHeapVector<TouchInfo>&);
+    bool dispatchTouchEvents(const PlatformTouchEvent&, WillBeHeapVector<TouchInfo>&, bool, bool);
 
     // NOTE: If adding a new field to this class please ensure that it is
     // cleared in |EventHandler::clear()|.
 
     LocalFrame* const m_frame;
 
     bool m_mousePressed;
     bool m_capturesDragging;
     RefPtrWillBeMember<Node> m_mousePressNode;
 
@@ skipping 84 matching lines @@
     // True iff some of the delta has been consumed for the current
     // scroll sequence in this frame, or any child frames. Only used
     // with ScrollCustomization. If some delta has been consumed, a
     // 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