[ew] Move operation observers from QuotaUtil to FileSystemBackend.

storage/browser/fileapi/file_system_quota_util.h

 // Copyright (c) 2012 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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/files/file.h"
-#include "storage/browser/fileapi/task_runner_bound_observer_list.h"
 #include "storage/browser/storage_browser_export.h"
 #include "storage/common/fileapi/file_system_types.h"
 #include "url/gurl.h"
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace storage {
 class QuotaManagerProxy;
@@ skipping 31 matching lines @@
   virtual int64 GetOriginUsageOnFileTaskRunner(
       storage::FileSystemContext* file_system_context,
       const GURL& origin_url,
       storage::FileSystemType type) = 0;
 
   // Creates new reservation object for the origin and the type.
   virtual scoped_refptr<QuotaReservation>
       CreateQuotaReservationOnFileTaskRunner(
           const GURL& origin_url,
           FileSystemType type) = 0;
-
-  virtual void AddFileUpdateObserver(
-      FileSystemType type,
-      FileUpdateObserver* observer,
-      base::SequencedTaskRunner* task_runner) = 0;
-  virtual void AddFileChangeObserver(
-      FileSystemType type,
-      FileChangeObserver* observer,
-      base::SequencedTaskRunner* task_runner) = 0;
-  virtual void AddFileAccessObserver(
-      FileSystemType type,
-      FileAccessObserver* observer,
-      base::SequencedTaskRunner* task_runner) = 0;
-
-  // Returns the observer list for |type|, or returns NULL if any observers
-  // have not been registered on |type|.
-  virtual const UpdateObserverList* GetUpdateObservers(
-      FileSystemType type) const = 0;
-  virtual const ChangeObserverList* GetChangeObservers(
-      FileSystemType type) const = 0;
-  virtual const AccessObserverList* GetAccessObservers(
-      FileSystemType type) const = 0;
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_