Implement SyncFileSystemService::GetFileSyncStatus method

chrome/browser/sync_file_system/sync_file_system_service.h

Index: chrome/browser/sync_file_system/sync_file_system_service.h
diff --git a/chrome/browser/sync_file_system/sync_file_system_service.h b/chrome/browser/sync_file_system/sync_file_system_service.h
index 798c541cae92a2e452c81745b6b8d5f74ae7421e..25af7b2f3653a5a257140f8d299e0246a8a3eed3 100644
--- a/chrome/browser/sync_file_system/sync_file_system_service.h
+++ b/chrome/browser/sync_file_system/sync_file_system_service.h
@@ -57,6 +57,11 @@ class SyncFileSystemService
       const fileapi::FileSystemURL& url,
       const fileapi::ConflictFileInfoCallback& callback);
 
+  // Returns the file |url|'s sync status.
+  void GetFileSyncStatus(
+      const fileapi::FileSystemURL& url,
+      const fileapi::SyncFileStatusCallback& callback);
+
   void AddSyncEventObserver(SyncEventObserver* observer);
   void RemoveSyncEventObserver(SyncEventObserver* observer);
 
@@ -107,6 +112,9 @@ class SyncFileSystemService
   void DidProcessLocalChange(fileapi::SyncStatusCode status,
                              const fileapi::FileSystemURL& url);
 
+  void DidGetLocalChangeStatus(const fileapi::SyncFileStatusCallback& callback,
+                               bool has_pending_local_changes);
+
   void OnSyncEnabledForRemoteSync();
 
   // RemoteFileSyncService::Observer overrides.