Histogram the amount of time spent on HTTP(S) page loads

components/page_load_metrics/browser/metrics_web_contents_observer_unittest.cc

 // Copyright (c) 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 "components/page_load_metrics/browser/metrics_web_contents_observer.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 24 matching lines @@
  public:
   explicit TestPageLoadMetricsObserver(
       std::vector<PageLoadTiming>* updated_timings,
       std::vector<PageLoadTiming>* complete_timings,
       std::vector<GURL>* observed_committed_urls)
       : updated_timings_(updated_timings),
         complete_timings_(complete_timings),
         observed_committed_urls_(observed_committed_urls) {}
 
   void OnStart(content::NavigationHandle* navigation_handle,
-               const GURL& currently_committed_url) override {
+               const GURL& currently_committed_url,
+               bool started_in_foreground) override {
     observed_committed_urls_->push_back(currently_committed_url);
   }
 
   void OnTimingUpdate(const PageLoadTiming& timing,
                       const PageLoadExtraInfo& extra_info) override {
     updated_timings_->push_back(timing);
   }
 
   void OnComplete(const PageLoadTiming& timing,
                   const PageLoadExtraInfo& extra_info) override {
@@ skipping 385 matching lines @@
   rfh_tester->SimulateNavigationStop();
 
   web_contents()->Stop();
 
   histogram_tester_.ExpectTotalCount(internal::kAbortChainSizeNoCommit, 1);
   histogram_tester_.ExpectBucketCount(internal::kAbortChainSizeNoCommit, 3,
                                       1);
 }
 
 }  // namespace page_load_metrics