Expose the initiating origin/URL of a navigation in the Blink public API

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 658 matching lines @@
     const Vector<String>& removedSelectors) {
   if (WebFrameClient* client = m_webFrame->client())
     client->didMatchCSS(m_webFrame, WebVector<WebString>(addedSelectors),
                         WebVector<WebString>(removedSelectors));
 }
 
 DocumentLoader* FrameLoaderClientImpl::createDocumentLoader(
     LocalFrame* frame,
     const ResourceRequest& request,
     const SubstituteData& data,
-    ClientRedirectPolicy clientRedirectPolicy) {
-  WebDataSourceImpl* ds =
-      WebDataSourceImpl::create(frame, request, data, clientRedirectPolicy);
-  if (m_webFrame->client())
-    m_webFrame->client()->didCreateDataSource(m_webFrame, ds);
+    ClientRedirectPolicy clientRedirectPolicy,
+    Document* requestorDocument) {
+  WebDataSourceImpl* ds = WebDataSourceImpl::create(
+      frame, request, data, clientRedirectPolicy, requestorDocument);
+  m_webFrame->client()->didCreateDataSource(m_webFrame, ds);

[kuzminruslan, 2016/11/12 08:51:57]

i am not sure, but perhaps skiped if(m_webFrame->client()) besides in code exist
examples code - m_webFrame->setClient(0);

   return ds;
 }
 
 String FrameLoaderClientImpl::userAgent() {
   WebString override =
       m_webFrame->client() ? m_webFrame->client()->userAgentOverride() : "";
   if (!override.isEmpty())
     return override;
 
   if (m_userAgent.isEmpty())
@@ skipping 280 matching lines @@
 WebDevToolsAgentImpl* FrameLoaderClientImpl::devToolsAgent() {
   return WebLocalFrameImpl::fromFrame(m_webFrame->frame()->localFrameRoot())
       ->devToolsAgentImpl();
 }
 
 KURL FrameLoaderClientImpl::overrideFlashEmbedWithHTML(const KURL& url) {
   return m_webFrame->client()->overrideFlashEmbedWithHTML(WebURL(url));
 }
 
 }  // namespace blink