Disable IndexBackfiller and tests

Author: tom-andersen

packages/firestore/src/local/index_backfiller.ts

@@ -30,6 +30,7 @@ import { Persistence, Scheduler } from './persistence';
 import { PersistencePromise } from './persistence_promise';
 import { PersistenceTransaction } from './persistence_transaction';
 import { isIndexedDbTransactionError } from './simple_db';
+import { INDEXING_ENABLED } from "./indexeddb_schema";
 
 const LOG_TAG = 'IndexBackiller';
 
@@ -58,7 +59,9 @@ export class IndexBackfillerScheduler implements Scheduler {
       this.task === null,
       'Cannot start an already started IndexBackfillerScheduler'
     );
-    this.schedule(INITIAL_BACKFILL_DELAY_MS);
+    if (INDEXING_ENABLED) {
+      this.schedule(INITIAL_BACKFILL_DELAY_MS);
+    }
   }
 
   stop(): void {

packages/firestore/test/unit/local/index_backfiller.test.ts

@@ -46,8 +46,12 @@ import { JSON_SERIALIZER } from './persistence_test_helpers';
 import * as PersistenceTestHelpers from './persistence_test_helpers';
 import { TestDocumentOverlayCache } from './test_document_overlay_cache';
 import { TestIndexManager } from './test_index_manager';
+import { INDEXING_ENABLED } from "../../../src/local/indexeddb_schema";
 
 describe('IndexedDb IndexBackfiller', () => {
+  if (!INDEXING_ENABLED) {
+    return;
+  }
   if (!IndexedDbPersistence.isAvailable()) {
     console.warn('No IndexedDB. Skipping IndexedDb IndexBackfiller tests.');
     return;