Report passive prevent defaulted event listeners correctly to the console.

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 9177b507d1ed70182052d95199034ef7e5c4ebc5..99663663441a8692e69e4b8b0b9572ef623e8e0c 100644
--- a/third_party/WebKit/Source/core/events/Event.cpp
+++ b/third_party/WebKit/Source/core/events/Event.cpp
@@ -231,7 +231,7 @@ bool Event::isBeforeUnloadEvent() const
 void Event::preventDefault()
 {
     if (m_handlingPassive) {
-        const LocalDOMWindow* window = m_currentTarget ? m_currentTarget->toDOMWindow() : 0;
+        const LocalDOMWindow* window = m_eventPath ? m_eventPath->windowEventContext().window() : 0;
         if (window)
             window->printErrorMessage("Unable to preventDefault inside passive event listener invocation.");
         return;