Standardize usage of virtual/override/final in media/

media/cast/test/fake_single_thread_task_runner.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 MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_
 #define MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 class FakeSingleThreadTaskRunner : public base::SingleThreadTaskRunner {
  public:
   explicit FakeSingleThreadTaskRunner(base::SimpleTestTickClock* clock);
 
   void RunTasks();
 
   // Note: Advances |clock_|.
   void Sleep(base::TimeDelta t);
 
   // base::SingleThreadTaskRunner implementation.
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const base::Closure& task,
-                               base::TimeDelta delay) override;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override;
 
-  virtual bool RunsTasksOnCurrentThread() const override;
+  bool RunsTasksOnCurrentThread() const override;
 
   // This function is currently not used, and will return false.
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
-      base::TimeDelta delay) override;
+  bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
+                                  const base::Closure& task,
+                                  base::TimeDelta delay) override;
 
  protected:
-  virtual ~FakeSingleThreadTaskRunner();
+  ~FakeSingleThreadTaskRunner() override;
 
  private:
   base::SimpleTestTickClock* const clock_;
   std::multimap<base::TimeTicks, PostedTask> tasks_;
   bool fail_on_next_task_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSingleThreadTaskRunner);
 };
 
 }  // namespace test
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_