components/sessions/base_session_service_delegate.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_H_
   6 #define COMPONENTS_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9
  10 namespace base {
  11 class SequencedWorkerPool;
  12 }
  13
  14 class GURL;
  15
  16 namespace sessions {
  17
  18 // The BaseSessionServiceDelegate decouples the BaseSessionService from
  19 // chrome/content dependencies.
  20 class BaseSessionServiceDelegate {
  21  public:
  22   BaseSessionServiceDelegate() {}
  23
  24   // Get the sequenced worker pool for running tasks on the backend thread as
  25   // long as the system is not shutting down.
  26   virtual base::SequencedWorkerPool* GetBlockingPool() = 0;
  27
  28   // Tests if a given URL should be tracked.
  29   virtual bool ShouldTrackEntry(const GURL& url) = 0;
  30
  31   // Returns true if save operations can be performed as a delayed task - which
  32   // is usually only used by unit tests.
  33   virtual bool ShouldUseDelayedSave() = 0;
  34
  35   // Called when commands are about to be written to disc.
  36   virtual void OnWillSaveCommands() = 0;
  37
  38   // Called when commands were saved to disc.
  39   virtual void OnSavedCommands() = 0;
  40
  41  protected:
  42   virtual ~BaseSessionServiceDelegate() {}
  43 };
  44
  45 }  // namespace sessions
  46
  47 #endif  // COMPONENTS_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_H_