[Sync] Componentize synced_tab_delegate

chrome/browser/sync/glue/synced_session_util.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_SYNC_GLUE_SYNCED_SESSION_UTIL_H_
-#define CHROME_BROWSER_SYNC_GLUE_SYNCED_SESSION_UTIL_H_
-
-class GURL;
-
-namespace sessions {
-struct SessionTab;
-struct SessionWindow;
-}
-
-namespace browser_sync {
-
-// Checks if the given url is considered interesting enough to sync. Most urls
-// are considered interesting, examples of ones that are not are invalid urls,
-// files, and chrome internal pages.
-bool ShouldSyncURL(const GURL& url);
-
-// Returns if the tab has any navigation entries worth syncing or not.
-bool ShouldSyncSessionTab(const sessions::SessionTab& tab);
-
-// Returns if the window has any tabs worth syncing or not.
-bool ShouldSyncSessionWindow(const sessions::SessionWindow& window);
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_SYNCED_SESSION_UTIL_H_