Implement a Hit Test Cache.

Source/core/layout/svg/line/SVGInlineTextBox.cpp

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * 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.
  *
@@ skipping 248 matching lines @@
     if (isVisible || !hitRules.requireVisible) {
         if (hitRules.canHitBoundingBox
             || (hitRules.canHitStroke && (layoutObject().style()->svgStyle().hasStroke() || !hitRules.requireStroke))
             || (hitRules.canHitFill && (layoutObject().style()->svgStyle().hasFill() || !hitRules.requireFill))) {
             FloatPointWillBeLayoutPoint boxOrigin(x(), y());
             boxOrigin.moveBy(accumulatedOffset);
             FloatRectWillBeLayoutRect rect(boxOrigin, size());
             // FIXME: both calls to rawValue() below is temporary and should be removed once the transition
             // to LayoutUnit-based types is complete (crbug.com/321237)
             if (locationInContainer.intersects(rect.rawValue())) {
-                layoutObject().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset));
+                layoutObject().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset), rect);
                 if (!result.addNodeToListBasedTestResult(layoutObject().node(), locationInContainer, rect.rawValue()))
                     return true;
             }
         }
     }
     return false;
 }
 
 } // namespace blink