pushState should not be treated as a navigation (step 1 of 3)

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 2394 matching lines @@
       routing_id_,
       id,
       base::FilePath::FromUTF16Unsafe(path)));
 }
 
 void RenderViewImpl::initializeHelperPluginWebFrame(
     blink::WebHelperPlugin* plugin) {
   plugin->initializeFrame(main_render_frame_.get());
 }
 
+void RenderViewImpl::didStartLoading(bool to_different_document) {
+  didStartLoading();
+}
+
 void RenderViewImpl::didStartLoading() {
   if (is_loading_) {
     DVLOG(1) << "didStartLoading called while loading";
     return;
   }
 
   is_loading_ = true;
 
   Send(new ViewHostMsg_DidStartLoading(routing_id_));
 
@@ skipping 4023 matching lines @@
   for (size_t i = 0; i < icon_urls.size(); i++) {
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content