[page_load_metrics] Add a NavigationThrottle for richer abort metrics

chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc

 // Copyright 2015 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 "chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 123 matching lines @@
 
 const PageLoadExtraInfo
 PageLoadMetricsObserverTestHarness::GetPageLoadExtraInfoForCommittedLoad() {
   return observer_->GetPageLoadExtraInfoForCommittedLoad();
 }
 
 void PageLoadMetricsObserverTestHarness::NavigateWithPageTransitionAndCommit(
     const GURL& url,
     ui::PageTransition transition) {
   controller().LoadURL(url, content::Referrer(), transition, std::string());
-  int pending_id = controller().GetPendingEntry()->GetUniqueID();
-  const bool did_create_new_entry = true;
-  content::WebContentsTester::For(web_contents())
-      ->TestDidNavigate(web_contents()->GetMainFrame(), 1, pending_id,
-                        did_create_new_entry, url, transition);
+  content::WebContentsTester::For(web_contents())->CommitPendingNavigation();
 }
 
 }  // namespace page_load_metrics