Change hittest node to be scrollbar's parent when hittest include a scrollbar

third_party/WebKit/Source/core/layout/HitTestResult.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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,
@@ skipping 187 matching lines @@
 
   Member<Node> m_innerNode;
   Member<Node> m_innerPossiblyPseudoNode;
   // FIXME: Nothing changes this to a value different from m_hitTestLocation!
   LayoutPoint m_pointInInnerNodeFrame;  // The hit-tested point in innerNode
                                         // frame coordinates.
   LayoutPoint m_localPoint;  // A point in the local coordinate space of
                              // m_innerNode's layoutObject.Allows us to
                              // efficiently determine where inside the
                              // layoutObject we hit on subsequent operations.
-  Member<Element> m_innerURLElement;
+  Member<Element> m_innerURLElement;  // m_innerURLElement saves the enclosing

[mustaq, 2017/04/04 18:56:57]

Nit: "For non-URL, this is the enclosing that triggers navigation."

Also, for sake of readability, please move all multi-line comments in this file
to above the member, e.g. as in Node.h.

+                                      // elem that triggers navigation for
+                                      // non-URL.
   Member<Scrollbar> m_scrollbar;
   bool m_isOverFrameViewBase;  // Returns true if we are over a FrameViewBase
                                // (and not in the border/padding area of a
                                // LayoutPart for example).
 
   mutable Member<NodeSet> m_listBasedTestResult;
   String m_canvasRegionId;
 };
 
 }  // namespace blink
 
 WTF_ALLOW_CLEAR_UNUSED_SLOTS_WITH_MEM_FUNCTIONS(blink::HitTestResult);
 
 #endif  // HitTestResult_h