[ew] Move operation observers from QuotaUtil to FileSystemBackend.

chrome/browser/chromeos/fileapi/file_system_backend.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_FILEAPI_FILE_SYSTEM_BACKEND_H_
 #define CHROME_BROWSER_CHROMEOS_FILEAPI_FILE_SYSTEM_BACKEND_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "storage/browser/fileapi/file_system_backend.h"
+#include "storage/browser/fileapi/task_runner_bound_observer_list.h"
 #include "storage/browser/quota/special_storage_policy.h"
 #include "storage/common/fileapi/file_system_types.h"
 
 namespace storage {
 class CopyOrMoveFileValidatorFactory;
 class ExternalMountPoints;
 class FileSystemURL;
 class WatcherManager;
 }  // namespace storage
 
@@ skipping 85 matching lines @@
   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
       const storage::FileSystemURL& path,
       int64 offset,
       const base::Time& expected_modification_time,
       storage::FileSystemContext* context) const OVERRIDE;
   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
       const storage::FileSystemURL& url,
       int64 offset,
       storage::FileSystemContext* context) const OVERRIDE;
   virtual storage::FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
+  virtual const storage::UpdateObserverList* GetUpdateObservers(
+      storage::FileSystemType type) const OVERRIDE;
+  virtual const storage::ChangeObserverList* GetChangeObservers(
+      storage::FileSystemType type) const OVERRIDE;
+  virtual const storage::AccessObserverList* GetAccessObservers(
+      storage::FileSystemType type) const OVERRIDE;
 
   // storage::ExternalFileSystemBackend overrides.
   virtual bool IsAccessAllowed(
       const storage::FileSystemURL& url) const OVERRIDE;
   virtual std::vector<base::FilePath> GetRootDirectories() const OVERRIDE;
   virtual void GrantFullAccessToExtension(
       const std::string& extension_id) OVERRIDE;
   virtual void GrantFileAccessToExtension(
       const std::string& extension_id,
       const base::FilePath& virtual_path) OVERRIDE;
@@ skipping 35 matching lines @@
   // Globally visible mount points. System MountPonts instance should outlive
   // all FileSystemBackend instances, so raw pointer is safe.
   storage::ExternalMountPoints* system_mount_points_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemBackend);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILEAPI_FILE_SYSTEM_BACKEND_H_