SyncFS: store disabled origins in DriveMetadataStore

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 615cba324e3c4ca8b7f4b2a17a4b955df33f0ed6..1593a00499cfa87aad1d7aa870cadcd4a95810a3 100644
--- a/chrome/browser/sync_file_system/remote_file_sync_service.h
+++ b/chrome/browser/sync_file_system/remote_file_sync_service.h
@@ -100,6 +100,14 @@ class RemoteFileSyncService {
       const GURL& origin,
       const SyncStatusCallback& callback) = 0;
 
+  virtual void EnableOriginForTrackingChanges(
+      const GURL& origin,
+      const SyncStatusCallback& callback) = 0;
+
+  virtual void DisableOriginForTrackingChanges(
+      const GURL& origin,
+      const SyncStatusCallback& callback) = 0;
+
   // Deletes the |origin| directory from the remote backing service.
   virtual void DeleteOriginDirectory(
       const GURL& origin,