[IndexedDB] Integrating failures and corruption with transaction

content/browser/indexed_db/indexed_db_database_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/indexed_db/indexed_db_database.h"
 
 #include <stdint.h>
 #include <set>
 #include <utility>
 
@@ skipping 315 matching lines @@
 
   // Final delete request should also run.
   EXPECT_TRUE(request2->success_called());
 
   // And everything else should be complete.
   EXPECT_EQ(db->ConnectionCount(), 0UL);
   EXPECT_EQ(db->ActiveOpenDeleteCount(), 0UL);
   EXPECT_EQ(db->PendingOpenDeleteCount(), 0UL);
 }
 
-void DummyOperation(IndexedDBTransaction* transaction) {
+leveldb::Status DummyOperation(IndexedDBTransaction* transaction) {
+  return leveldb::Status::OK();
 }
 
 class IndexedDBDatabaseOperationTest : public testing::Test {
  public:
   IndexedDBDatabaseOperationTest()
       : commit_success_(leveldb::Status::OK()),
         factory_(new MockIndexedDBFactory()) {}
 
   void SetUp() override {
     backing_store_ = new IndexedDBFakeBackingStore();
@@ skipping 167 matching lines @@
   EXPECT_EQ(1ULL, db_->metadata().object_stores.size());
 
   // This will execute the Put then Delete.
   RunPostedTasks();
   EXPECT_EQ(0ULL, db_->metadata().object_stores.size());
 
   transaction_->Commit();  // Cleans up the object hierarchy.
 }
 
 }  // namespace content