Bug 625295 - Allow for per-engine sort parameters to download bookmarks by sortindex. r=rnewman

services/sync/modules/engines.js

@@ -702,6 +702,9 @@ SyncEngine.prototype = {
   _recordObj: CryptoWrapper,
   version: 1,
 
+  // Which sortindex to use when retrieving records for this engine.
+  _defaultSort: undefined,
+
   // A relative priority to use when computing an order
   // for engines to be synced. Higher-priority engines
   // (lower numbers) are synced first.
@@ -929,6 +932,10 @@ SyncEngine.prototype = {
       newitems = this._itemSource();
     }
 
+    if (this._defaultSort) {
+      newitems.sort = this._defaultSort;
+    }
+
     if (isMobile) {
       batchSize = MOBILE_BATCH_SIZE;
     }

services/sync/modules/engines/bookmarks.js

@@ -202,6 +202,7 @@ BookmarksEngine.prototype = {
   _storeObj: BookmarksStore,
   _trackerObj: BookmarksTracker,
   version: 2,
+  _defaultSort: "index",
 
   syncPriority: 4,