[NoStatePrefetch] Add performance histograms.

chrome/browser/history/history_tab_helper.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 "chrome/browser/history/history_tab_helper.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "chrome/browser/history/history_service_factory.h"
@@ skipping 101 matching lines @@
   // about: URL to the history db and keep the data: URL hidden. This is what
   // the WebContents' URL getter does.
   NavigationEntry* last_committed =
       web_contents()->GetController().GetLastCommittedEntry();
   const history::HistoryAddPageArgs& add_page_args =
       CreateHistoryAddPageArgs(
           web_contents()->GetURL(), details.entry->GetTimestamp(),
           details.did_replace_entry, last_committed->GetUniqueID(), params);
 
   prerender::PrerenderManager* prerender_manager =
-      prerender::PrerenderManagerFactory::GetForProfile(
-          Profile::FromBrowserContext(web_contents()->GetBrowserContext()));
+      prerender::PrerenderManagerFactory::GetForBrowserContext(
+          web_contents()->GetBrowserContext());
   if (prerender_manager) {
     prerender::PrerenderContents* prerender_contents =
         prerender_manager->GetPrerenderContents(web_contents());
     if (prerender_contents) {
       prerender_contents->DidNavigate(add_page_args);
       return;
     }
   }
 
 #if !defined(OS_ANDROID)
@@ skipping 38 matching lines @@
   if (hs) {
     NavigationEntry* entry = tab->GetController().GetLastCommittedEntry();
     history::ContextID context_id = history::ContextIDForWebContents(tab);
     if (entry) {
       hs->UpdateWithPageEndTime(context_id, entry->GetUniqueID(), tab->GetURL(),
                                 base::Time::Now());
     }
     hs->ClearCachedDataForContextID(context_id);
   }
 }