Allow hitting the SVG root when its display-type is 'block'

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 03fa787f7adbc541a5953da6b4a02ddb57b47ee3..777f7cc90e000d3b09527f0ceb2ee0e124e4fe32 100644
--- a/Source/core/rendering/svg/RenderSVGRoot.cpp
+++ b/Source/core/rendering/svg/RenderSVGRoot.cpp
@@ -448,11 +448,11 @@ bool RenderSVGRoot::nodeAtPoint(const HitTestRequest& request, HitTestResult& re
     }
 
     // If we didn't early exit above, we've just hit the container <svg> element. Unlike SVG 1.1, 2nd Edition allows container elements to be hit.
-    if (hitTestAction == HitTestBlockBackground && visibleToHitTestRequest(request)) {
-        // Only return true here, if the last hit testing phase 'BlockBackground' is executed. If we'd return true in the 'Foreground' phase,
-        // hit testing would stop immediately. For SVG only trees this doesn't matter. Though when we have a <foreignObject> subtree we need
-        // to be able to detect hits on the background of a <div> element. If we'd return true here in the 'Foreground' phase, we are not able
-        // to detect these hits anymore.
+    if ((hitTestAction == HitTestBlockBackground || hitTestAction == HitTestChildBlockBackground) && visibleToHitTestRequest(request)) {
+        // Only return true here, if the last hit testing phase 'BlockBackground' (or 'ChildBlockBackground' - depending on context) is executed.
+        // If we'd return true in the 'Foreground' phase, hit testing would stop immediately. For SVG only trees this doesn't matter.
+        // Though when we have a <foreignObject> subtree we need to be able to detect hits on the background of a <div> element.
+        // If we'd return true here in the 'Foreground' phase, we are not able to detect these hits anymore.
         LayoutRect boundsRect(accumulatedOffset + location(), size());
         if (locationInContainer.intersects(boundsRect)) {
             updateHitTestResult(result, pointInBorderBox);