[SVG2] Svg elements that overflow the viewport should also be hitdetected.

Source/core/rendering/svg/RenderSVGRoot.cpp

Index: Source/core/rendering/svg/RenderSVGRoot.cpp
diff --git a/Source/core/rendering/svg/RenderSVGRoot.cpp b/Source/core/rendering/svg/RenderSVGRoot.cpp
index 6d554622faaed5e156de2f4ac828c7b9af446eee..4ab0b148f8964cabeebaa5aa7feb94cb4c292a46 100644
--- a/Source/core/rendering/svg/RenderSVGRoot.cpp
+++ b/Source/core/rendering/svg/RenderSVGRoot.cpp
@@ -422,9 +422,10 @@ bool RenderSVGRoot::nodeAtPoint(const HitTestRequest& request, HitTestResult& re
     LayoutPoint pointInParent = locationInContainer.point() - toLayoutSize(accumulatedOffset);
     LayoutPoint pointInBorderBox = pointInParent - toLayoutSize(location());
 
-    // Only test SVG content if the point is in our content box.
+    // Only test SVG content if the point is in our content box, or in case we
+    // don't clip to the viewport, the visual overflow rect.
     // FIXME: This should be an intersection when rect-based hit tests are supported by nodeAtFloatPoint.
-    if (contentBoxRect().contains(pointInBorderBox)) {
+    if (contentBoxRect().contains(pointInBorderBox) || (!shouldApplyViewportClip() && visualOverflowRect().contains(pointInBorderBox))) {
         const AffineTransform& localToParentTransform = this->localToParentTransform();
         if (localToParentTransform.isInvertible()) {
             FloatPoint localPoint = localToParentTransform.inverse().mapPoint(FloatPoint(pointInParent));