Standardize usage of virtual/override/final specifiers.

chrome/browser/supervised_user/supervised_user_refresh_token_fetcher_unittest.cc

 // Copyright 2014 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 "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service.h"
 #include "chrome/browser/supervised_user/supervised_user_refresh_token_fetcher.h"
 #include "chrome/test/base/testing_profile.h"
@@ skipping 71 matching lines @@
   ASSERT_EQ(1u, requests.size());
   EXPECT_EQ(1u, requests[0].scopes.size());
   EXPECT_EQ(1u, requests[0].scopes.count(GaiaConstants::kOAuth1LoginScope));
 }
 
 }  // namespace
 
 class SupervisedUserRefreshTokenFetcherTest : public testing::Test {
  public:
   SupervisedUserRefreshTokenFetcherTest();
-  virtual ~SupervisedUserRefreshTokenFetcherTest() {}
+  ~SupervisedUserRefreshTokenFetcherTest() override {}
 
  protected:
   void StartFetching();
   void StartFetchingWithDeviceId(const std::string& device_id);
 
   net::TestURLFetcher* GetIssueTokenRequest();
   net::TestURLFetcher* GetRefreshTokenRequest();
 
   void MakeOAuth2TokenServiceRequestSucceed();
   void MakeOAuth2TokenServiceRequestFail(GoogleServiceAuthError::State error);
@@ skipping 267 matching lines @@
 
 TEST_F(SupervisedUserRefreshTokenFetcherTest, CancelWhileFetchingRefreshToken) {
   StartFetching();
   MakeOAuth2TokenServiceRequestSucceed();
   MakeIssueTokenRequestSucceed();
   Reset();
 
   EXPECT_EQ(GoogleServiceAuthError::NONE, error().state());
   EXPECT_EQ(std::string(), token());
 }