[Tab Metrics] Measure FP, FCP and FMP for Foreground Tab during Session Restore

chrome/browser/sessions/tab_loader.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/sessions/tab_loader.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/memory/memory_coordinator_client_registry.h"
@@ skipping 210 matching lines @@
                               force_load_delay_multiplier_,
                           this, &TabLoader::ForceLoadTimerFired);
 }
 
 void TabLoader::RemoveTab(NavigationController* controller) {
   registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
                     content::Source<WebContents>(controller->GetWebContents()));
   registrar_.Remove(this, content::NOTIFICATION_LOAD_STOP,
                     content::Source<NavigationController>(controller));
 
+  RestoreOrigin::RemoveFromWebContents(controller->GetWebContents());
+
   TabsLoading::iterator i = tabs_loading_.find(controller);
   if (i != tabs_loading_.end())
     tabs_loading_.erase(i);
 
   TabsToLoad::iterator j =
       find(tabs_to_load_.begin(), tabs_to_load_.end(), controller);
   if (j != tabs_to_load_.end())
     tabs_to_load_.erase(j);
 }
 
@@ skipping 68 matching lines @@
     // memory pressure.
     stats_collector_->DeferTab(tab);
   }
   // By calling |LoadNextTab| explicitly, we make sure that the
   // |NOTIFICATION_SESSION_RESTORE_DONE| event gets sent.
   LoadNextTab();
 }
 
 // static
 TabLoader* TabLoader::shared_tab_loader_ = nullptr;