Support event handling in SVG's use-element shadow trees

third_party/WebKit/Source/core/events/Event.cpp

Index: third_party/WebKit/Source/core/events/Event.cpp
diff --git a/third_party/WebKit/Source/core/events/Event.cpp b/third_party/WebKit/Source/core/events/Event.cpp
index 8799cc033b1c1d8d2904765ff0619ecea3bf3158..7fb74576dd084320d1ba50977d5f71ce7ee0020e 100644
--- a/third_party/WebKit/Source/core/events/Event.cpp
+++ b/third_party/WebKit/Source/core/events/Event.cpp
@@ -328,6 +328,17 @@ EventDispatchMediator* Event::createMediator() {
   return EventDispatchMediator::create(this);
 }
 
+EventTarget* Event::currentTarget() const {
+  if (!m_currentTarget)
+    return nullptr;
+  Node* node = m_currentTarget->toNode();
+  if (node && node->isSVGElement()) {
+    if (SVGElement* svgElement = toSVGElement(node)->correspondingElement())
+      return svgElement;
+  }
+  return m_currentTarget.get();
+}
+
 double Event::timeStamp(ScriptState* scriptState) const {
   double timeStamp = 0;
   if (scriptState && scriptState->domWindow()) {