Standardize usage of virtual/override/final specifiers.

content/browser/indexed_db/indexed_db_backing_store_unittest.cc

 // Copyright (c) 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_backing_store.h"
 
 #include "base/callback.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
@@ skipping 210 matching lines @@
                                                status);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestIDBFactory);
 };
 
 class IndexedDBBackingStoreTest : public testing::Test {
  public:
   IndexedDBBackingStoreTest() {}
-  virtual void SetUp() {
+  void SetUp() override {
     const GURL origin("http://localhost:81");
     task_runner_ = new base::TestSimpleTaskRunner();
     special_storage_policy_ = new MockSpecialStoragePolicy();
     special_storage_policy_->SetAllUnlimited(true);
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     idb_context_ = new IndexedDBContextImpl(temp_dir_.path(),
                                             special_storage_policy_.get(),
                                             NULL,
                                             task_runner_.get());
     idb_factory_ = new TestIDBFactory(idb_context_.get());
@@ skipping 755 matching lines @@
 
   std::vector<base::string16> names = backing_store_->GetDatabaseNames(&s);
   EXPECT_TRUE(s.ok());
   EXPECT_EQ(names.size(), 1ULL);
   EXPECT_EQ(names[0], db1_name);
 }
 
 }  // namespace
 
 }  // namespace content