[New CL] Add a tab helper to record the last visit date for each bookmark

chrome/browser/bookmarks/bookmark_model_factory.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/bookmarks/bookmark_model_factory.h"
 
 #include "base/command_line.h"
 #include "base/deferred_sequenced_task_runner.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
@@ skipping 11 matching lines @@
 #include "components/bookmarks/browser/bookmark_utils.h"
 #include "components/bookmarks/browser/startup_task_runner_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/prefs/pref_service.h"
 #include "components/undo/bookmark_undo_service.h"
 #include "content/public/browser/browser_thread.h"
 
 using bookmarks::BookmarkModel;
 
 // static
+BookmarkModel* BookmarkModelFactory::GetForBrowserContext(
+    content::BrowserContext* browser_context) {
+  return static_cast<BookmarkModel*>(
+      GetInstance()->GetServiceForBrowserContext(browser_context, true));
+}
+
+// static
 BookmarkModel* BookmarkModelFactory::GetForProfile(Profile* profile) {
   return static_cast<BookmarkModel*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 BookmarkModel* BookmarkModelFactory::GetForProfileIfExists(Profile* profile) {
   return static_cast<BookmarkModel*>(
       GetInstance()->GetServiceForBrowserContext(profile, false));
 }
@@ skipping 44 matching lines @@
 }
 
 content::BrowserContext* BookmarkModelFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 bool BookmarkModelFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }