[SyncFS] Make DumpFiles async

chrome/browser/sync_file_system/sync_file_system_service.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 CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 85 matching lines @@
   void DidInitializeFileSystem(const GURL& app_origin,
                                const SyncStatusCallback& callback,
                                SyncStatusCode status);
   void DidRegisterOrigin(const GURL& app_origin,
                          const SyncStatusCallback& callback,
                          SyncStatusCode status);
 
   void DidInitializeFileSystemForDump(const GURL& app_origin,
                                       const DumpFilesCallback& callback,
                                       SyncStatusCode status);
+  void DidDumpFiles(const GURL& app_origin,
+                    const DumpFilesCallback& callback,
+                    scoped_ptr<base::ListValue> files);
 
   // Overrides sync_enabled_ setting. This should be called only by tests.
   void SetSyncEnabledForTesting(bool enabled);
 
   void DidGetLocalChangeStatus(const SyncFileStatusCallback& callback,
                                SyncStatusCode status,
                                bool has_pending_local_changes);
 
   void OnRemoteServiceStateUpdated(RemoteServiceState state,
                                    const std::string& description);
@@ skipping 53 matching lines @@
   bool sync_enabled_;
 
   ObserverList<SyncEventObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncFileSystemService);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_