Track scroll event handlers in nested documents

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 56203732bc1f5132cde33a1d48691e506bdb9391..98ed10f128d4e4aba43edc28529941234e88ff67 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -71,7 +71,6 @@
 #include "core/dom/Element.h"
 #include "core/dom/ElementDataCache.h"
 #include "core/dom/ElementTraversal.h"
-#include "core/dom/EventHandlerRegistry.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContextTask.h"
 #include "core/dom/MainThreadTaskRunner.h"
@@ -5644,13 +5643,6 @@ void Document::clearWeakMembers(Visitor* visitor)
         for (unsigned i = 0; i < deadNodes.size(); ++i)
             didClearTouchEventHandlers(deadNodes[i]);
     }
-
-    EventHandlerRegistry* registry = static_cast<EventHandlerRegistry*>(DocumentSupplement::from(this, EventHandlerRegistry::supplementName()));
-    // FIXME: Oilpan: This is pretty funky. The current code disables all modifications of the
-    // EventHandlerRegistry when the document becomes inactive. To keep that behavior we only
-    // perform weak processing of the registry when the document is active.
-    if (registry && isActive())
-        registry->clearWeakMembers(visitor);
 }
 
 void Document::trace(Visitor* visitor)