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

components/domain_reliability/util.h

 // 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.
 
 #ifndef COMPONENTS_DOMAIN_RELIABILITY_UTIL_H_
 #define COMPONENTS_DOMAIN_RELIABILITY_UTIL_H_
 
 #include <map>
 
 #include "base/callback_forward.h"
@@ skipping 86 matching lines @@
   base::TimeTicks NowTicks() override;
   scoped_ptr<MockableTime::Timer> CreateTimer() override;
 };
 
 // A subclass of BackoffEntry that uses a MockableTime to keep track of time.
 class MockableTimeBackoffEntry : public net::BackoffEntry {
  public:
   MockableTimeBackoffEntry(const net::BackoffEntry::Policy* const policy,
                            MockableTime* time);
 
-  virtual ~MockableTimeBackoffEntry();
+  ~MockableTimeBackoffEntry() override;
 
  protected:
-  virtual base::TimeTicks ImplGetTimeNow() const override;
+  base::TimeTicks ImplGetTimeNow() const override;
 
  private:
   MockableTime* time_;
 };
 
 }  // namespace domain_reliability
 
 #endif  // COMPONENTS_DOMAIN_RELIABILITY_UTIL_H_