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

Source/core/rendering/svg/RenderSVGContainer.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  *
  * 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
@@ skipping 168 matching lines @@
     if (!SVGRenderSupport::pointInClippingArea(this, localPoint))
         return false;
 
     for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
         if (child->nodeAtFloatPoint(request, result, localPoint, hitTestAction)) {
             updateHitTestResult(result, roundedLayoutPoint(localPoint));
             return true;
         }
     }
 
-    // Spec: Only graphical elements can be targeted by the mouse, period.
+    // pointer-events=boundingBox makes it possible for containers to be direct targets
+    if (style()->pointerEvents() == PE_BOUNDINGBOX) {
+        ASSERT(isObjectBoundingBoxValid());
+        if (objectBoundingBox().contains(localPoint)) {
+            updateHitTestResult(result, roundedLayoutPoint(localPoint));
+            return true;
+        }
+    }
     // 16.4: "If there are no graphics elements whose relevant graphics content is under the pointer (i.e., there is no target element), the event is not dispatched."
     return false;
 }
 
 }