Do not SendPasswordForms when LocalFrame is being detached

third_party/WebKit/Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
@@ skipping 361 matching lines @@
                                       loadType, KURL(), clientRedirectPolicy));
     request.setClientRedirect(clientRedirectPolicy);
     m_loader.load(request, loadType);
   } else {
     DCHECK_EQ(FrameLoadTypeReload, loadType);
     m_navigationScheduler->scheduleReload();
   }
 }
 
 void LocalFrame::detach(FrameDetachType type) {
+  m_detached = true;
+
   PluginScriptForbiddenScope forbidPluginDestructorScripting;
   m_loader.stopAllLoaders();
   // Don't allow any new child frames to load in this frame: attaching a new
   // child frame during or after detaching children results in an attached
   // frame on a detached DOM tree, which is bad.
   SubframeLoadingDisabler disabler(*document());
   m_loader.dispatchUnloadEvent();
   detachChildren();
 
   // All done if detaching the subframes brought about a detach of this frame
@@ skipping 506 matching lines @@
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Enter();
 }
 
 ScopedFrameBlamer::~ScopedFrameBlamer() {
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Leave();
 }
 
 }  // namespace blink