Fix touch adjustment to never return pseudo elements

Source/core/page/TouchAdjustment.cpp

 /*
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 455 matching lines @@
             if (snapTo(*it, touchHotspot, touchArea, adjustedPoint)) {
                 if (node->isDescendantOf(targetNode)) {
                     // Try to always return the inner-most element.
                     targetPoint = adjustedPoint;
                     targetNode = node;
                     targetArea = it->boundingBox();
                 }
             }
         }
     }
+
+    // As for HitTestResult.innerNode, we skip over pseudo elements.
+    if (targetNode && targetNode->isPseudoElement())
+        targetNode = targetNode->parentOrShadowHostNode();
+
     if (targetNode) {
         targetArea = targetNode->document().view()->contentsToWindow(targetArea);
     }
     return (targetNode);
 }
 
 } // namespace TouchAdjustment
 
 bool findBestClickableCandidate(Node*& targetNode, IntPoint& targetPoint, const IntPoint& touchHotspot, const IntRect& touchArea, const WillBeHeapVector<RefPtrWillBeMember<Node> >& nodes)
 {
@@ skipping 13 matching lines @@
 
 bool findBestZoomableArea(Node*& targetNode, IntRect& targetArea, const IntPoint& touchHotspot, const IntRect& touchArea, const WillBeHeapVector<RefPtrWillBeMember<Node> >& nodes)
 {
     IntPoint targetPoint;
     TouchAdjustment::SubtargetGeometryList subtargets;
     TouchAdjustment::compileZoomableSubtargets(nodes, subtargets);
     return TouchAdjustment::findNodeWithLowestDistanceMetric(targetNode, targetPoint, targetArea, touchHotspot, touchArea, subtargets, TouchAdjustment::zoomableIntersectionQuotient);
 }
 
 } // namespace blink