[Durable] Updated Durable heuristic to use 'important sites'

chrome/browser/storage/durable_storage_permission_context.h

 // 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.
 
 #ifndef CHROME_BROWSER_STORAGE_DURABLE_STORAGE_PERMISSION_CONTEXT_H_
 #define CHROME_BROWSER_STORAGE_DURABLE_STORAGE_PERMISSION_CONTEXT_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
                         const GURL& requesting_origin,
                         const GURL& embedding_origin,
                         bool user_gesture,
                         const BrowserPermissionCallback& callback) override;
   void UpdateContentSetting(const GURL& requesting_origin,
                             const GURL& embedding_origin,
                             ContentSetting content_setting) override;
   bool IsRestrictedToSecureOrigins() const override;
 
  private:
-  FRIEND_TEST_ALL_PREFIXES(BookmarksOriginTest, Exists);
-  FRIEND_TEST_ALL_PREFIXES(BookmarksOriginTest, DoesntExist);
-
-  static bool IsOriginBookmarked(
-      const std::vector<bookmarks::BookmarkModel::URLAndTitle>& bookmarks,
-      const GURL& origin);
-
   DISALLOW_COPY_AND_ASSIGN(DurableStoragePermissionContext);
 };
 
 #endif  // CHROME_BROWSER_STORAGE_DURABLE_STORAGE_PERMISSION_CONTEXT_H_