Add pointer-events="bounding-box" for svg content.

Source/core/rendering/svg/RenderSVGText.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved.
  * Copyright (C) 2012 Google Inc.
  *
@@ skipping 425 matching lines @@
     RootInlineBox* box = new SVGRootInlineBox(this);
     box->setHasVirtualLogicalHeight();
     return box;
 }
 
 bool RenderSVGText::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
 {
     PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_TEXT_HITTESTING, request, style()->pointerEvents());
     bool isVisible = (style()->visibility() == VISIBLE);
     if (isVisible || !hitRules.requireVisible) {
-        if ((hitRules.canHitStroke && (style()->svgStyle()->hasStroke() || !hitRules.requireStroke))
+        if ((hitRules.canHitBoundingBox && !objectBoundingBox().isEmpty())
+            || (hitRules.canHitStroke && (style()->svgStyle()->hasStroke() || !hitRules.requireStroke))
             || (hitRules.canHitFill && (style()->svgStyle()->hasFill() || !hitRules.requireFill))) {
             FloatPoint localPoint = localToParentTransform().inverse().mapPoint(pointInParent);
 
             if (!SVGRenderSupport::pointInClippingArea(this, localPoint))
                 return false;
+            if (hitRules.canHitBoundingBox && !objectBoundingBox().contains(localPoint))
+                return false;
 
             HitTestLocation hitTestLocation(LayoutPoint(flooredIntPoint(localPoint)));
             return RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), hitTestAction);
         }
     }
 
     return false;
 }
 
 bool RenderSVGText::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
@@ skipping 90 matching lines @@
     return 0;
 }
 
 // Fix for <rdar://problem/8048875>. We should not render :first-letter CSS Style
 // in a SVG text element context.
 void RenderSVGText::updateFirstLetter()
 {
 }
 
 }