Implement v1 slot logic in EventPath

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

Index: third_party/WebKit/Source/core/events/EventPath.cpp
diff --git a/third_party/WebKit/Source/core/events/EventPath.cpp b/third_party/WebKit/Source/core/events/EventPath.cpp
index b958b89089ed270a78e7d1c8bc5464aa4ad8c40b..54175abd8187e80108dcf4befd82cc5ff9af9db8 100644
--- a/third_party/WebKit/Source/core/events/EventPath.cpp
+++ b/third_party/WebKit/Source/core/events/EventPath.cpp
@@ -34,6 +34,7 @@
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/TouchEvent.h"
 #include "core/events/TouchEventContext.h"
+#include "core/html/HTMLSlotElement.h"
 
 namespace blink {
 
@@ -127,6 +128,13 @@ void EventPath::calculatePath()
             current = insertionPoints.last();
             continue;
         }
+        if (current->isChildOfV1ShadowHost()) {
+            if (HTMLSlotElement* slot = current->assignedSlot()) {
+                current = slot;
+                nodesInPath.append(current);
+                continue;
+            }
+        }
         if (current->isShadowRoot()) {
             if (m_event && shouldStopAtShadowRoot(*m_event, *toShadowRoot(current), *m_node))
                 break;