Clear opener when frame is detached.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 514 matching lines @@
 bool WebLocalFrameImpl::isWebRemoteFrame() const {
   return false;
 }
 
 WebRemoteFrame* WebLocalFrameImpl::toWebRemoteFrame() {
   NOTREACHED();
   return 0;
 }
 
 void WebLocalFrameImpl::close() {
+  WebLocalFrame::close();
+
   m_client = nullptr;
 
   if (m_devToolsAgent)
     m_devToolsAgent.clear();
 
   m_selfKeepAlive.clear();
 }
 
 WebString WebLocalFrameImpl::uniqueName() const {
   return frame()->tree().uniqueName();
@@ skipping 1009 matching lines @@
   frameCount--;
 }
 
 DEFINE_TRACE(WebLocalFrameImpl) {
   visitor->trace(m_frameLoaderClientImpl);
   visitor->trace(m_frame);
   visitor->trace(m_devToolsAgent);
   visitor->trace(m_textFinder);
   visitor->trace(m_printContext);
   visitor->trace(m_contextMenuNode);
-  visitor->template registerWeakMembers<WebFrame, &WebFrame::clearWeakFrames>(
-      this);
   WebFrame::traceFrames(visitor, this);
   WebFrameImplBase::trace(visitor);
 }
 
 void WebLocalFrameImpl::setCoreFrame(LocalFrame* frame) {
   m_frame = frame;
 }
 
 void WebLocalFrameImpl::initializeCoreFrame(FrameHost* host,
                                             FrameOwner* owner,
@@ skipping 863 matching lines @@
         createMarkup(startPosition, endPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   } else {
     clipHtml =
         createMarkup(endPosition, startPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   }
 }
 
 }  // namespace blink