[Sync] Componentize synced_tab_delegate

chrome/browser/sync/glue/synced_tab_delegate.h

-// 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.
-
-#ifndef CHROME_BROWSER_SYNC_GLUE_SYNCED_TAB_DELEGATE_H__
-#define CHROME_BROWSER_SYNC_GLUE_SYNCED_TAB_DELEGATE_H__
-
-#include <string>
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "components/sessions/core/session_id.h"
-#include "components/sync_driver/sessions/synced_window_delegates_getter.h"
-
-class Profile;
-
-namespace content {
-class NavigationEntry;
-class WebContents;
-}
-
-namespace browser_sync {
-class SyncedWindowDelegate;
-
-// A SyncedTabDelegate is used to insulate the sync code from depending
-// directly on WebContents, NavigationController, and the extensions TabHelper.
-class SyncedTabDelegate {
- public:
-  virtual ~SyncedTabDelegate();
-
-  // Methods from TabContents.
-
-  virtual SessionID::id_type GetWindowId() const = 0;
-  virtual SessionID::id_type GetSessionId() const = 0;
-  virtual bool IsBeingDestroyed() const = 0;
-  virtual Profile* profile() const = 0;
-
-  // Method derived from extensions TabHelper.
-
-  virtual std::string GetExtensionAppId() const = 0;
-
-  // Methods from NavigationController.
-  virtual bool IsInitialBlankNavigation() const = 0;
-  virtual int GetCurrentEntryIndex() const = 0;
-  virtual int GetEntryCount() const = 0;
-  virtual int GetPendingEntryIndex() const = 0;
-  virtual content::NavigationEntry* GetPendingEntry() const = 0;
-  virtual content::NavigationEntry* GetEntryAtIndex(int i) const = 0;
-  virtual content::NavigationEntry* GetActiveEntry() const = 0;
-
-  // The idea here is that GetEntryAtIndex may not always return the pending
-  // entry when asked for the entry at the pending index. These convinience
-  // methods will check for this case and then call the correct entry accessor.
-  content::NavigationEntry* GetCurrentEntryMaybePending() const;
-  content::NavigationEntry* GetEntryAtIndexMaybePending(int i) const;
-
-  // Supervised user related methods.
-
-  virtual bool ProfileIsSupervised() const = 0;
-  virtual const std::vector<const content::NavigationEntry*>*
-      GetBlockedNavigations() const = 0;
-
-  virtual bool IsPinned() const = 0;
-  virtual bool HasWebContents() const = 0;
-  virtual content::WebContents* GetWebContents() const = 0;
-
-  // Session sync related methods.
-  virtual int GetSyncId() const = 0;
-  virtual void SetSyncId(int sync_id) = 0;
-
-  // Returns true if this tab should be synchronized.
-  bool ShouldSync() const;
-
-  // Sets the window getter. This must be called before any of the sync or
-  // supervised user methods on this class are called. It is currently set when
-  // the SyncTabDelegate is retrieved from WebContents via ImplFromWebContents.
-  void SetSyncedWindowGetter(scoped_ptr<SyncedWindowDelegatesGetter> getter);
-
-  // Returns the SyncedTabDelegate associated with WebContents.
-  static SyncedTabDelegate* ImplFromWebContents(
-      content::WebContents* web_contents);
-
- protected:
-  SyncedTabDelegate();
-
-  // Overridden by the tests to avoid interaction with static state.
-  virtual const SyncedWindowDelegate* GetSyncedWindowDelegate() const;
-
- private:
-  // A getter for accessing the associated SyncedWindowDelegate.
-  scoped_ptr<SyncedWindowDelegatesGetter> synced_window_getter_;
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_SYNCED_TAB_DELEGATE_H__