Revert of Simplify FrameLoader::Clear(), remove FrameLoader::check_timer_

third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 158 matching lines @@
 
 void HTMLFrameOwnerElement::ClearContentFrame() {
   if (!content_frame_)
     return;
 
   DCHECK_EQ(content_frame_->Owner(), this);
   content_frame_ = nullptr;
 
   for (ContainerNode* node = this; node; node = node->ParentOrShadowHostNode())
     node->DecrementConnectedSubframeCount();
-
-  GetDocument().CheckCompleted();
 }
 
 void HTMLFrameOwnerElement::DisconnectContentFrame() {
   // FIXME: Currently we don't do this in removedFrom because this causes an
   // unload event in the subframe which could execute script that could then
   // reach up into this document and then attempt to look back down. We should
   // see if this behavior is really needed as Gecko does not allow this.
   if (Frame* frame = ContentFrame()) {
     frame->Detach(FrameDetachType::kRemove);
   }
@@ skipping 182 matching lines @@
 }
 
 DEFINE_TRACE(HTMLFrameOwnerElement) {
   visitor->Trace(content_frame_);
   visitor->Trace(widget_);
   HTMLElement::Trace(visitor);
   FrameOwner::Trace(visitor);
 }
 
 }  // namespace blink