[ew] Move operation observers from QuotaUtil to FileSystemBackend.

chrome/browser/sync_file_system/local/sync_file_system_backend.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/local/sync_file_system_backend.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 193 matching lines @@
     storage::FileSystemContext* context) const {
   DCHECK(CanHandleType(url.type()));
   return GetDelegate()->CreateFileStreamWriter(
       url, offset, context, storage::kFileSystemTypeSyncableForInternalSync);
 }
 
 storage::FileSystemQuotaUtil* SyncFileSystemBackend::GetQuotaUtil() {
   return GetDelegate();
 }
 
+const storage::UpdateObserverList* SyncFileSystemBackend::GetUpdateObservers(
+    storage::FileSystemType type) const {
+  return GetDelegate()->GetUpdateObservers(type);
+}
+
+const storage::ChangeObserverList* SyncFileSystemBackend::GetChangeObservers(
+    storage::FileSystemType type) const {
+  return GetDelegate()->GetChangeObservers(type);
+}
+
+const storage::AccessObserverList* SyncFileSystemBackend::GetAccessObservers(
+    storage::FileSystemType type) const {
+  return GetDelegate()->GetAccessObservers(type);
+}
+
 // static
 SyncFileSystemBackend* SyncFileSystemBackend::GetBackend(
     const storage::FileSystemContext* file_system_context) {
   DCHECK(file_system_context);
   return static_cast<SyncFileSystemBackend*>(
       file_system_context->GetFileSystemBackend(
           storage::kFileSystemTypeSyncable));
 }
 
 void SyncFileSystemBackend::SetLocalFileChangeTracker(
@@ skipping 74 matching lines @@
                  SyncStatusCodeToFileError(status));
     return;
   }
 
   callback.Run(GetSyncableFileSystemRootURI(origin_url),
                GetFileSystemName(origin_url, type),
                base::File::FILE_OK);
 }
 
 }  // namespace sync_file_system