[SyncFS] Make GetOriginStatusMap asynchronous

chrome/browser/sync_file_system/remote_file_sync_service.h

Index: chrome/browser/sync_file_system/remote_file_sync_service.h
diff --git a/chrome/browser/sync_file_system/remote_file_sync_service.h b/chrome/browser/sync_file_system/remote_file_sync_service.h
index 8a310548f4c6f122c828809ab80bb3c360d5913d..6f71c8a1c9d4a85cb0b00d9ac501a15b0f8a8594 100644
--- a/chrome/browser/sync_file_system/remote_file_sync_service.h
+++ b/chrome/browser/sync_file_system/remote_file_sync_service.h
@@ -111,6 +111,8 @@ class RemoteFileSyncService {
 
   // 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,
@@ -192,7 +194,7 @@ class RemoteFileSyncService {
 
   // 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,