drive: Introduce DriveSystemServiceObserver

chrome/browser/chromeos/drive/fake_drive_file_system.cc

 // 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.
 
 #include "chrome/browser/chromeos/drive/fake_drive_file_system.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 24 matching lines @@
 }
 
 void FakeDriveFileSystem::AddObserver(DriveFileSystemObserver* observer) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 void FakeDriveFileSystem::RemoveObserver(DriveFileSystemObserver* observer) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
-void FakeDriveFileSystem::NotifyFileSystemMounted() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-}
-
-void FakeDriveFileSystem::NotifyFileSystemToBeUnmounted() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-}
-
 void FakeDriveFileSystem::CheckForUpdates() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 void FakeDriveFileSystem::GetEntryInfoByResourceId(
     const std::string& resource_id,
     const GetEntryInfoWithFilePathCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   drive_service_->GetResourceEntry(
@@ skipping 332 matching lines @@
       callback.Run(DRIVE_FILE_OK, entry.Pass());
       return;
     }
   }
 
   callback.Run(DRIVE_FILE_ERROR_NOT_FOUND, scoped_ptr<DriveEntryProto>());
 }
 
 }  // namespace test_util
 }  // namespace drive