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

chrome/browser/bookmarks/bookmark_model_factory.h

Index: chrome/browser/bookmarks/bookmark_model_factory.h
diff --git a/chrome/browser/bookmarks/bookmark_model_factory.h b/chrome/browser/bookmarks/bookmark_model_factory.h
index b4a67bf28d8d44e18baf3eed6967dd1027a254c4..bb17bb61d5b795a70273f831f091d9b596e85cdb 100644
--- a/chrome/browser/bookmarks/bookmark_model_factory.h
+++ b/chrome/browser/bookmarks/bookmark_model_factory.h
@@ -21,6 +21,14 @@ class BookmarkModel;
 // Singleton that owns all BookmarkModels and associates them with Profiles.
 class BookmarkModelFactory : public BrowserContextKeyedServiceFactory {
  public:
+  static bookmarks::BookmarkModel* GetForBrowserContext(
+      content::BrowserContext* browser_context);
+
+  static bookmarks::BookmarkModel* GetForBrowserContextIfExists(
+      content::BrowserContext* browser_context);
+
+  // TODO(pke): Remove GetForProfile and GetForProfileIfExists and use
+  // GetForBrowserContext/GetForBrowserContextIfExists everywhere.
   static bookmarks::BookmarkModel* GetForProfile(Profile* profile);
 
   static bookmarks::BookmarkModel* GetForProfileIfExists(Profile* profile);