Standardize usage of virtual/override/final specifiers.

net/cookies/cookie_monster_unittest.cc

 // Copyright (c) 2012 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 "net/cookies/cookie_store_unittest.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 2727 matching lines @@
   EXPECT_EQ("foo=bar; hello=world", GetCookies(cm.get(), url));
 }
 
 class CookieMonsterNotificationTest : public CookieMonsterTest {
  public:
   CookieMonsterNotificationTest()
       : test_url_("http://www.google.com/foo"),
         store_(new MockPersistentCookieStore),
         monster_(new CookieMonster(store_.get(), NULL)) {}
 
-  virtual ~CookieMonsterNotificationTest() {}
+  ~CookieMonsterNotificationTest() override {}
 
   CookieMonster* monster() { return monster_.get(); }
 
  protected:
   const GURL test_url_;
 
  private:
   scoped_refptr<MockPersistentCookieStore> store_;
   scoped_refptr<CookieMonster> monster_;
 };
@@ skipping 88 matching lines @@
   scoped_ptr<CookieStore::CookieChangedSubscription> sub1(
       monster()->AddCallbackForCookie(test_url_, "abc",
           base::Bind(&CountCalls, &calls1)));
   SetCookie(monster(), test_url_, "abc=def");
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(1, calls0);
   EXPECT_EQ(1, calls1);
 }
 
 }  // namespace net