[SVG] Reject hit-test queries when the element has a singular transform

Source/core/rendering/svg/SVGRenderSupport.cpp

Index: Source/core/rendering/svg/SVGRenderSupport.cpp
diff --git a/Source/core/rendering/svg/SVGRenderSupport.cpp b/Source/core/rendering/svg/SVGRenderSupport.cpp
index 692cdb13f2a7982309c7005fad43bf3c9ae27b4f..1b45a93bb9b28a280e6bfd3229cc593493727be3 100644
--- a/Source/core/rendering/svg/SVGRenderSupport.cpp
+++ b/Source/core/rendering/svg/SVGRenderSupport.cpp
@@ -327,6 +327,14 @@ bool SVGRenderSupport::pointInClippingArea(RenderObject* object, const FloatPoin
     return true;
 }
 
+bool SVGRenderSupport::transformToUserSpaceAndCheckClipping(RenderObject* object, const AffineTransform& localTransform, const FloatPoint& pointInParent, FloatPoint& localPoint)
+{
+    if (!localTransform.isInvertible())
+        return false;
+    localPoint = localTransform.inverse().mapPoint(pointInParent);
+    return pointInClippingArea(object, localPoint);
+}
+
 void SVGRenderSupport::applyStrokeStyleToContext(GraphicsContext* context, const RenderStyle* style, const RenderObject* object)
 {
     ASSERT(context);