Instant: Use only one hidden WebContents per profile.

chrome/browser/history/history_tab_helper.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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 "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
-#include "chrome/browser/instant/instant_overlay.h"
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/render_messages.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
@@ skipping 98 matching lines @@
           Profile::FromBrowserContext(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;
     }
   }
 
-  InstantOverlay* instant_overlay =
-      InstantOverlay::FromWebContents(web_contents());
-  if (instant_overlay) {
-    instant_overlay->DidNavigate(add_page_args);
-    return;
-  }
-
 #if !defined(OS_ANDROID)
   // Don't update history if this web contents isn't associatd with a tab.
   Browser* browser = chrome::FindBrowserWithWebContents(web_contents());
   if (!browser || browser->is_app())
     return;
 #endif
 
   UpdateHistoryForNavigation(add_page_args);
 }
 
@@ skipping 58 matching lines @@
   HistoryService* hs =
       HistoryServiceFactory::GetForProfile(profile, Profile::IMPLICIT_ACCESS);
   if (hs) {
     NavigationEntry* entry = tab->GetController().GetLastCommittedEntry();
     if (entry) {
       hs->UpdateWithPageEndTime(tab, entry->GetPageID(), tab->GetURL(),
                                 base::Time::Now());
     }
   }
 }