Test to see if we can bring in document data from Blink.

content/renderer/render_frame_impl.cc

 // Copyright 2013 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 "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 2907 matching lines @@
   // Save these to be processed when the ensuing navigation is committed.
   WebSearchableFormData web_searchable_form_data(form);
   internal_data->set_searchable_form_url(web_searchable_form_data.url());
   internal_data->set_searchable_form_encoding(
       web_searchable_form_data.encoding().utf8());
 
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WillSubmitForm(form));
 }
 
 void RenderFrameImpl::didCreateDataSource(blink::WebLocalFrame* frame,
-                                          blink::WebDataSource* datasource) {
+                                          blink::WebDataSource* datasource,
+                                          int initiator) {
   DCHECK(!frame_ || frame_ == frame);
 
   bool content_initiated = !pending_navigation_params_.get();
+  if (initiator != 0)
+    DCHECK_EQ(content_initiated, initiator == 1);
 
   // Make sure any previous redirect URLs end up in our new data source.
   if (pending_navigation_params_.get()) {
     for (const auto& i :
          pending_navigation_params_->request_params.redirects) {
       datasource->appendRedirect(i);
     }
   }
 
   DocumentState* document_state = DocumentState::FromDataSource(datasource);
@@ skipping 3197 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content