Standardize usage of virtual/override/final specifiers.

chrome/renderer/extensions/extension_localization_peer_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 <map>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/renderer/extensions/extension_localization_peer.h"
 #include "extensions/common/message_bundle.h"
@@ skipping 61 matching lines @@
       const std::string& security_info,
       const base::TimeTicks& completion_time,
       int64_t total_transfer_size));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockRequestPeer);
 };
 
 class ExtensionLocalizationPeerTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     sender_.reset(new MockIpcMessageSender());
     original_peer_.reset(new MockRequestPeer());
     filter_peer_.reset(
         ExtensionLocalizationPeer::CreateExtensionLocalizationPeer(
             original_peer_.get(), sender_.get(), "text/css",
             GURL(kExtensionUrl_1)));
   }
 
   ExtensionLocalizationPeer* CreateExtensionLocalizationPeer(
       const std::string& mime_type,
@@ skipping 147 matching lines @@
   EXPECT_CALL(*original_peer_,
               OnReceivedData(StrEq(message.data()), message.length(), -1));
 
   EXPECT_CALL(*original_peer_, OnReceivedResponse(_));
   EXPECT_CALL(*original_peer_, OnCompletedRequest(
       net::OK, false, false, "", base::TimeTicks(), -1));
 
   filter_peer->OnCompletedRequest(
       net::OK, false, false, std::string(), base::TimeTicks(), -1);
 }