drive: Introduce DriveSystemServiceObserver

chrome/browser/chromeos/drive/fake_drive_file_system.h

 // Copyright (c) 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_DRIVE_FAKE_DRIVE_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FAKE_DRIVE_FILE_SYSTEM_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 27 matching lines @@
 class FakeDriveFileSystem : public DriveFileSystemInterface {
  public:
   explicit FakeDriveFileSystem(
       google_apis::DriveServiceInterface* drive_service);
   virtual ~FakeDriveFileSystem();
 
   // DriveFileSystemInterface Overrides.
   virtual void Initialize() OVERRIDE;
   virtual void AddObserver(DriveFileSystemObserver* observer) OVERRIDE;
   virtual void RemoveObserver(DriveFileSystemObserver* observer) OVERRIDE;
-  virtual void NotifyFileSystemMounted() OVERRIDE;
-  virtual void NotifyFileSystemToBeUnmounted() OVERRIDE;
   virtual void CheckForUpdates() OVERRIDE;
   virtual void GetEntryInfoByResourceId(
       const std::string& resource_id,
       const GetEntryInfoWithFilePathCallback& callback) OVERRIDE;
   virtual void TransferFileFromRemoteToLocal(
       const base::FilePath& remote_src_file_path,
       const base::FilePath& local_dest_file_path,
       const FileOperationCallback& callback) OVERRIDE;
   virtual void TransferFileFromLocalToRemote(
       const base::FilePath& local_src_file_path,
@@ skipping 138 matching lines @@
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<FakeDriveFileSystem> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeDriveFileSystem);
 };
 
 }  // namespace test_util
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FAKE_DRIVE_FILE_SYSTEM_H_