replace 'virtual ... OVERRIDE' with '... override'

base/threading/sequenced_worker_pool.cc

Index: base/threading/sequenced_worker_pool.cc
diff --git a/base/threading/sequenced_worker_pool.cc b/base/threading/sequenced_worker_pool.cc
index 38b299847b1add386cc537733e4f55752ce9b3d9..05097fcdfd91cb9dfede727a8d27783038051f46 100644
--- a/base/threading/sequenced_worker_pool.cc
+++ b/base/threading/sequenced_worker_pool.cc
@@ -98,10 +98,10 @@ class SequencedWorkerPoolTaskRunner : public TaskRunner {
       SequencedWorkerPool::WorkerShutdown shutdown_behavior);
 
   // TaskRunner implementation
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const Closure& task,
-                               TimeDelta delay) OVERRIDE;
-  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const Closure& task,
+                       TimeDelta delay) override;
+  bool RunsTasksOnCurrentThread() const override;
 
  private:
   virtual ~SequencedWorkerPoolTaskRunner();
@@ -151,16 +151,15 @@ class SequencedWorkerPoolSequencedTaskRunner : public SequencedTaskRunner {
       SequencedWorkerPool::WorkerShutdown shutdown_behavior);
 
   // TaskRunner implementation
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const Closure& task,
-                               TimeDelta delay) OVERRIDE;
-  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const Closure& task,
+                       TimeDelta delay) override;
+  bool RunsTasksOnCurrentThread() const override;
 
   // SequencedTaskRunner implementation
-  virtual bool PostNonNestableDelayedTask(
-      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;
 
  private:
   virtual ~SequencedWorkerPoolSequencedTaskRunner();
@@ -238,7 +237,7 @@ class SequencedWorkerPool::Worker : public SimpleThread {
   virtual ~Worker();
 
   // SimpleThread implementation. This actually runs the background thread.
-  virtual void Run() OVERRIDE;
+  void Run() override;
 
   void set_running_task_info(SequenceToken token,
                              WorkerShutdown shutdown_behavior) {