[Async][WIP] Call FrameLoader::checkCompleted() asynchronously to avoid sync body.onload()

third_party/WebKit/Source/web/WebLocalFrameImpl.h

 /*
  * 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 124 matching lines @@
     void reloadLoFiImages() override;
     void loadRequest(const WebURLRequest&) override;
     void loadHistoryItem(const WebHistoryItem&, WebHistoryLoadType, WebURLRequest::CachePolicy) override;
     void loadData(
         const WebData&, const WebString& mimeType, const WebString& textEncoding,
         const WebURL& baseURL, const WebURL& unreachableURL, bool replace) override;
     void loadHTMLString(
         const WebData& html, const WebURL& baseURL, const WebURL& unreachableURL,
         bool replace) override;
     void stopLoading() override;
+    void stopLoadingCheckCompletedNow() override;
     WebDataSource* provisionalDataSource() const override;
     WebDataSource* dataSource() const override;
     void enableViewSourceMode(bool enable) override;
     bool isViewSourceModeEnabled() const override;
     void setReferrerForRequest(WebURLRequest&, const WebURL& referrer) override;
     void dispatchWillSendRequest(WebURLRequest&) override;
     WebURLLoader* createAssociatedURLLoader(const WebURLLoaderOptions&) override;
     unsigned unloadListenerCount() const override;
     void insertText(const WebString&) override;
     void setMarkedText(const WebString&, unsigned location, unsigned length) override;
@@ skipping 252 matching lines @@
     // cleared upon close().
     SelfKeepAlive<WebLocalFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif