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

Source/core/rendering/svg/RenderSVGContainer.cpp

Index: Source/core/rendering/svg/RenderSVGContainer.cpp
diff --git a/Source/core/rendering/svg/RenderSVGContainer.cpp b/Source/core/rendering/svg/RenderSVGContainer.cpp
index f9a9bf16c9a72b02a413a2f7c748f10851711242..909cdda72c5d0a9bde584b0d8205336cce8b0cc1 100644
--- a/Source/core/rendering/svg/RenderSVGContainer.cpp
+++ b/Source/core/rendering/svg/RenderSVGContainer.cpp
@@ -183,7 +183,13 @@ bool RenderSVGContainer::nodeAtFloatPoint(const HitTestRequest& request, HitTest
         }
     }
 
-    // Spec: Only graphical elements can be targeted by the mouse, period.
+    // pointer-events=boundingBox makes it possible for containers to be direct targets
+    ASSERT(isObjectBoundingBoxValid());
+    if (style()->pointerEvents() == PE_BOUNDINGBOX && 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;
 }