Standardize usage of virtual/override/final in base/

base/test/test_simple_task_runner.h

 // 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.
 
 #ifndef BASE_TEST_TEST_SIMPLE_TASK_RUNNER_H_
 #define BASE_TEST_TEST_SIMPLE_TASK_RUNNER_H_
 
 #include <deque>
 
 #include "base/basictypes.h"
@@ skipping 29 matching lines @@
 // as a template for writing a test TaskRunner implementation using
 // TestPendingTask.
 //
 // Note that, like any TaskRunner, TestSimpleTaskRunner is
 // ref-counted.
 class TestSimpleTaskRunner : public SingleThreadTaskRunner {
  public:
   TestSimpleTaskRunner();
 
   // SingleThreadTaskRunner implementation.
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const Closure& task,
-                               TimeDelta delay) override;
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const Closure& task,
-      TimeDelta delay) override;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const Closure& task,
+                       TimeDelta delay) override;
+  bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
+                                  const Closure& task,
+                                  TimeDelta delay) override;
 
-  virtual bool RunsTasksOnCurrentThread() const override;
+  bool RunsTasksOnCurrentThread() const override;
 
   const std::deque<TestPendingTask>& GetPendingTasks() const;
   bool HasPendingTask() const;
   base::TimeDelta NextPendingTaskDelay() const;
 
   // Clears the queue of pending tasks without running them.
   void ClearPendingTasks();
 
   // Runs each current pending task in order and clears the queue.
   // Any tasks posted by the tasks are not run.
   virtual void RunPendingTasks();
 
   // Runs pending tasks until the queue is empty.
   void RunUntilIdle();
 
  protected:
-  virtual ~TestSimpleTaskRunner();
+  ~TestSimpleTaskRunner() override;
 
   std::deque<TestPendingTask> pending_tasks_;
   ThreadChecker thread_checker_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestSimpleTaskRunner);
 };
 
 }  // namespace base
 
 #endif  // BASE_TEST_TEST_SIMPLE_TASK_RUNNER_H_