Clear opener when frame is detached.

third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "web/WebRemoteFrameImpl.h"
 
 #include "core/dom/Fullscreen.h"
 #include "core/dom/RemoteSecurityContext.h"
 #include "core/dom/SecurityContext.h"
 #include "core/frame/FrameView.h"
@@ skipping 29 matching lines @@
   WebRemoteFrameImpl* frame = new WebRemoteFrameImpl(scope, client);
   frame->setOpener(opener);
   return frame;
 }
 
 WebRemoteFrameImpl::~WebRemoteFrameImpl() {}
 
 DEFINE_TRACE(WebRemoteFrameImpl) {
   visitor->trace(m_frameClient);
   visitor->trace(m_frame);
-  visitor->template registerWeakMembers<WebFrame, &WebFrame::clearWeakFrames>(
-      this);
   WebFrame::traceFrames(visitor, this);
   WebFrameImplBase::trace(visitor);
 }
 
 bool WebRemoteFrameImpl::isWebLocalFrame() const {
   return false;
 }
 
 WebLocalFrame* WebRemoteFrameImpl::toWebLocalFrame() {
   NOTREACHED();
   return nullptr;
 }
 
 bool WebRemoteFrameImpl::isWebRemoteFrame() const {
   return true;
 }
 
 WebRemoteFrame* WebRemoteFrameImpl::toWebRemoteFrame() {
   return this;
 }
 
 void WebRemoteFrameImpl::close() {
+  WebRemoteFrame::close();
+
   m_selfKeepAlive.clear();
 }
 
 WebString WebRemoteFrameImpl::uniqueName() const {
   NOTREACHED();
   return WebString();
 }
 
 WebString WebRemoteFrameImpl::assignedName() const {
   NOTREACHED();
@@ skipping 447 matching lines @@
 }
 
 WebRemoteFrameImpl::WebRemoteFrameImpl(WebTreeScopeType scope,
                                        WebRemoteFrameClient* client)
     : WebRemoteFrame(scope),
       m_frameClient(RemoteFrameClientImpl::create(this)),
       m_client(client),
       m_selfKeepAlive(this) {}
 
 }  // namespace blink