[Sync] Move sessions files from sync_driver to sync_sessions.

components/sync_driver/glue/synced_window_delegate.h

-// 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.
-
-#ifndef COMPONENTS_SYNC_DRIVER_GLUE_SYNCED_WINDOW_DELEGATE_H_
-#define COMPONENTS_SYNC_DRIVER_GLUE_SYNCED_WINDOW_DELEGATE_H_
-
-#include <set>
-
-#include "components/sessions/core/session_id.h"
-
-namespace browser_sync {
-
-class SyncedTabDelegate;
-
-// A SyncedWindowDelegate is used to insulate the sync code from depending
-// directly on Browser and BrowserList.
-class SyncedWindowDelegate {
- public:
-  // Methods originating from Browser.
-
-  // Returns true iff this browser has a visible window representation
-  // associated with it. Sometimes, if a window is being created/removed the
-  // model object may exist without its UI counterpart.
-  virtual bool HasWindow() const = 0;
-
-  // see Browser::session_id
-  virtual SessionID::id_type GetSessionId() const = 0;
-
-  // see Browser::tab_count
-  virtual int GetTabCount() const = 0;
-
-  // see Browser::active_index
-  virtual int GetActiveIndex() const = 0;
-
-  // see Browser::is_app
-  virtual bool IsApp() const = 0;
-
-  // see Browser::is_type_tabbed
-  virtual bool IsTypeTabbed() const = 0;
-
-  // see Browser::is_type_popup
-  virtual bool IsTypePopup() const = 0;
-
-  // Methods derivated from Browser
-
-  // Returns true iff the provided tab is currently "pinned" in the tab strip.
-  virtual bool IsTabPinned(const SyncedTabDelegate* tab) const = 0;
-
-  // see TabStripModel::GetWebContentsAt
-  virtual SyncedTabDelegate* GetTabAt(int index) const = 0;
-
-  // Return the tab id for the tab at |index|.
-  virtual SessionID::id_type GetTabIdAt(int index) const = 0;
-
-  // Return true if we are currently restoring sessions asynchronously.
-  virtual bool IsSessionRestoreInProgress() const = 0;
-
-  // Helper methods.
-
-  // Return true if this window should be considered for syncing.
-  virtual bool ShouldSync() const = 0;
-
- protected:
-  virtual ~SyncedWindowDelegate() {}
-};
-
-}  // namespace browser_sync
-
-#endif  // COMPONENTS_SYNC_DRIVER_GLUE_SYNCED_WINDOW_DELEGATE_H_