Standardize usage of virtual/override/final specifiers in google_apis/.

google_apis/gaia/oauth2_access_token_fetcher_impl_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.
 //
 // A complete set of unit tests for OAuth2AccessTokenFetcherImpl.
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
@@ skipping 72 matching lines @@
 
 class OAuth2AccessTokenFetcherImplTest : public testing::Test {
  public:
   OAuth2AccessTokenFetcherImplTest()
       : request_context_getter_(new net::TestURLRequestContextGetter(
             base::MessageLoopProxy::current())),
         fetcher_(&consumer_, request_context_getter_.get(), "refresh_token") {
     base::RunLoop().RunUntilIdle();
   }
 
-  virtual ~OAuth2AccessTokenFetcherImplTest() {}
+  ~OAuth2AccessTokenFetcherImplTest() override {}
 
   virtual TestURLFetcher* SetupGetAccessToken(bool fetch_succeeds,
                                               int response_code,
                                               const std::string& body) {
     GURL url(GaiaUrls::GetInstance()->oauth2_token_url());
     TestURLFetcher* url_fetcher = new TestURLFetcher(0, url, &fetcher_);
     URLRequestStatus::Status status =
         fetch_succeeds ? URLRequestStatus::SUCCESS : URLRequestStatus::FAILED;
     url_fetcher->set_status(URLRequestStatus(status, 0));
 
@@ skipping 152 matching lines @@
     TestURLFetcher url_fetcher(0, GURL("http://www.google.com"), NULL);
     url_fetcher.SetResponseString(kValidFailureTokenResponse);
 
     std::string error;
     EXPECT_TRUE(
         OAuth2AccessTokenFetcherImpl::ParseGetAccessTokenFailureResponse(
             &url_fetcher, &error));
     EXPECT_EQ("invalid_grant", error);
   }
 }