Standardize usage of virtual/override/final specifiers.

chrome/browser/safe_browsing/incident_reporting/delayed_callback_runner_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/safe_browsing/incident_reporting/delayed_callback_runner.h"
 
 #include <map>
 #include <string>
 
 #include "base/callback.h"
@@ skipping 29 matching lines @@
   void RegisterTestCallback(const std::string& name) {
     callbacks_[name] = CallbackState();
     instance_->RegisterCallback(MakeCallback(name));
   }
 
  protected:
   DelayedCallbackRunnerTest()
       : task_runner_(new base::TestSimpleTaskRunner),
         thread_task_runner_handle_(task_runner_) {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     instance_.reset(new safe_browsing::DelayedCallbackRunner(
         base::TimeDelta::FromMilliseconds(1),  // ignored by simple runner.
         task_runner_));
   }
 
-  virtual void TearDown() override { instance_.reset(); }
+  void TearDown() override { instance_.reset(); }
 
   void OnRun(const std::string& name, CallbackArgument* arg) {
     EXPECT_FALSE(callbacks_[name].run);
     callbacks_[name].run = true;
   }
 
   void OnDelete(const std::string& name) {
     EXPECT_FALSE(callbacks_[name].deleted);
     callbacks_[name].deleted = true;
   }
@@ skipping 84 matching lines @@
   task_runner_->RunUntilIdle();
   EXPECT_TRUE(CallbackWasRun(name));
   EXPECT_TRUE(CallbackWasDeleted(name));
 
   RegisterTestCallback(name2);
   instance_->Start();
   task_runner_->RunUntilIdle();
   EXPECT_TRUE(CallbackWasRun(name2));
   EXPECT_TRUE(CallbackWasDeleted(name2));
 }