Implement snapshotting for non-Drive non-local file systems.

chrome/browser/chromeos/file_manager/volume_manager.h

 // Copyright 2013 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_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 20 matching lines @@
 class PowerManagerClient;
 }  // namespace chromeos
 
 namespace content {
 class BrowserContext;
 }  // namespace content
 
 namespace file_manager {
 
 class MountedDiskMonitor;
+class SnapshotManager;
 class VolumeManagerObserver;
 
 // Identifiers for volume types managed by Chrome OS file manager.
 enum VolumeType {
   VOLUME_TYPE_TESTING = -1,  // Used only in tests.
   VOLUME_TYPE_GOOGLE_DRIVE = 0,
   VOLUME_TYPE_DOWNLOADS_DIRECTORY,
   VOLUME_TYPE_REMOVABLE_DISK_PARTITION,
   VOLUME_TYPE_MOUNTED_ARCHIVE_FILE,
   VOLUME_TYPE_CLOUD_DEVICE,
@@ skipping 144 matching lines @@
 
   // Called on change to kExternalStorageDisabled pref.
   void OnExternalStorageDisabledChanged();
 
   // RemovableStorageObserver overrides.
   virtual void OnRemovableStorageAttached(
       const storage_monitor::StorageInfo& info) OVERRIDE;
   virtual void OnRemovableStorageDetached(
       const storage_monitor::StorageInfo& info) OVERRIDE;
 
+  SnapshotManager* snapshot_manager() { return snapshot_manager_.get(); }
+
  private:
   void OnStorageMonitorInitialized();
   void OnPrivetVolumesAvailable(
       const local_discovery::PrivetVolumeLister::VolumeList& volumes);
   void DoMountEvent(chromeos::MountError error_code,
                     const VolumeInfo& volume_info,
                     bool is_remounting);
   void DoUnmountEvent(chromeos::MountError error_code,
                       const VolumeInfo& volume_info);
 
   Profile* profile_;
   drive::DriveIntegrationService* drive_integration_service_;  // Not owned.
   chromeos::disks::DiskMountManager* disk_mount_manager_;      // Not owned.
   scoped_ptr<MountedDiskMonitor> mounted_disk_monitor_;
   PrefChangeRegistrar pref_change_registrar_;
   ObserverList<VolumeManagerObserver> observers_;
   scoped_ptr<local_discovery::PrivetVolumeLister> privet_volume_lister_;
   chromeos::file_system_provider::Service*
       file_system_provider_service_;  // Not owned by this class.
   std::map<std::string, VolumeInfo> mounted_volumes_;
+  scoped_ptr<SnapshotManager> snapshot_manager_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<VolumeManager> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(VolumeManager);
 };
 
 }  // namespace file_manager
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_H_