Fix TestBrowserThreadBundle destruction order in IndexedDBDatabaseOperationTest.

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 359 matching lines @@
     db_->TransactionCreated(transaction_);
 
     // Add a dummy task which takes the place of the VersionChangeOperation
     // which kicks off the upgrade. This ensures that the transaction has
     // processed at least one task before the CreateObjectStore call.
     transaction_->ScheduleTask(base::Bind(&DummyOperation));
   }
 
   void RunPostedTasks() { base::RunLoop().RunUntilIdle(); }
 
+private:
+  // Needs to outlive |db_|.
+  content::TestBrowserThreadBundle thread_bundle_;
+
  protected:
   scoped_refptr<IndexedDBFakeBackingStore> backing_store_;
   scoped_refptr<IndexedDBDatabase> db_;
   scoped_refptr<MockIndexedDBCallbacks> request_;
   scoped_refptr<MockIndexedDBDatabaseCallbacks> callbacks_;
   IndexedDBTransaction* transaction_;
   std::unique_ptr<IndexedDBConnection> connection_;
 
   leveldb::Status commit_success_;
 
  private:
   scoped_refptr<MockIndexedDBFactory> factory_;
-  content::TestBrowserThreadBundle thread_bundle_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBDatabaseOperationTest);
 };
 
 TEST_F(IndexedDBDatabaseOperationTest, CreateObjectStore) {
   EXPECT_EQ(0ULL, db_->metadata().object_stores.size());
   const int64_t store_id = 1001;
   db_->CreateObjectStore(transaction_, store_id, ASCIIToUTF16("store"),
                          IndexedDBKeyPath(), false /*auto_increment*/);
   EXPECT_EQ(1ULL, db_->metadata().object_stores.size());
@@ skipping 86 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