[SyncFS] Make GetOriginStatusMap asynchronous

chrome/browser/sync_file_system/remote_file_sync_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_REMOTE_FILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_FILE_SYNC_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 93 matching lines @@
     SyncFileMetadata metadata;
   };
 
   enum UninstallFlag {
     UNINSTALL_AND_PURGE_REMOTE,
     UNINSTALL_AND_KEEP_REMOTE,
   };
 
   // For GetOriginStatusMap.
   typedef std::map<GURL, std::string> OriginStatusMap;
+  typedef base::Callback<void(const OriginStatusMap& status_map)>
+      StatusMapCallback;

[tzik, 2014/05/22 03:51:13]

# As we chatted locally.
Can we change the parameter type to scoped_ptr<OriginStatusMap>?

[peria, 2014/05/22 04:37:58]

Done.

 
   // For GetRemoteVersions.
   typedef base::Callback<void(SyncStatusCode status,
                               const std::vector<Version>& versions)>
       RemoteVersionsCallback;
   typedef base::Callback<void(SyncStatusCode status,
                               webkit_blob::ScopedFile downloaded)>
       DownloadVersionCallback;
 
   // For DumpFile.
@@ skipping 61 matching lines @@
 
   // Returns true if the file |url| is marked conflicted in the remote service.
   virtual bool IsConflicting(const fileapi::FileSystemURL& url) = 0;
 
   // Returns the current remote service state (should equal to the value
   // returned by the last OnRemoteServiceStateUpdated notification.
   virtual RemoteServiceState GetCurrentState() const = 0;
 
   // Returns all origins along with an arbitrary string description of their
   // corresponding sync statuses.
-  virtual void GetOriginStatusMap(OriginStatusMap* status_map) = 0;
+  virtual void GetOriginStatusMap(const StatusMapCallback& callback) = 0;
 
   // Returns file metadata for |origin| to call |callback|.
   virtual void DumpFiles(const GURL& origin,
                          const ListCallback& callback) = 0;
 
   // Returns the dump of internal database.
   virtual void DumpDatabase(const ListCallback& callback) = 0;
 
   // Enables or disables the background sync.
   // Setting this to false should disable the synchronization (and make
@@ skipping 33 matching lines @@
 
   virtual void PromoteDemotedChanges() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RemoteFileSyncService);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_FILE_SYNC_SERVICE_H_