Standardize usage of virtual/override/final in chrome/browser/browsing_data/

chrome/browser/browsing_data/browsing_data_channel_id_helper_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 "chrome/browser/browsing_data/browsing_data_channel_id_helper.h"
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 35 matching lines @@
                                    "key", "cert");
   }
 
   void FetchCallback(
       const net::ChannelIDStore::ChannelIDList& channel_ids) {
     DCHECK_CURRENTLY_ON(BrowserThread::UI);
     channel_id_list_ = channel_ids;
   }
 
   // net::SSLConfigService::Observer implementation:
-  virtual void OnSSLConfigChanged() override {
-    ssl_config_changed_count_++;
-  }
+  void OnSSLConfigChanged() override { ssl_config_changed_count_++; }
 
  protected:
   content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<TestingProfile> testing_profile_;
 
   net::ChannelIDStore::ChannelIDList channel_id_list_;
 
   int ssl_config_changed_count_;
 };
 
@@ skipping 68 matching lines @@
   scoped_refptr<CannedBrowsingDataChannelIDHelper> helper(
       new CannedBrowsingDataChannelIDHelper());
 
   ASSERT_TRUE(helper->empty());
   helper->AddChannelID(net::ChannelIDStore::ChannelID(
       origin, base::Time(), base::Time(), "key", "cert"));
   ASSERT_FALSE(helper->empty());
   helper->Reset();
   ASSERT_TRUE(helper->empty());
 }