replace OVERRIDE and FINAL with override and final in base/

base/files/file_path_watcher_fsevents.h

Index: base/files/file_path_watcher_fsevents.h
diff --git a/base/files/file_path_watcher_fsevents.h b/base/files/file_path_watcher_fsevents.h
index 5640b4d54972aa8fe3feb06867df822bcf9fa7dd..d2fb8dad5d8d3268364bc2614ab8d0d04e8ffab8 100644
--- a/base/files/file_path_watcher_fsevents.h
+++ b/base/files/file_path_watcher_fsevents.h
@@ -38,8 +38,8 @@ class FilePathWatcherFSEvents : public FilePathWatcher::PlatformDelegate {
   // FilePathWatcher::PlatformDelegate overrides.
   virtual bool Watch(const FilePath& path,
                      bool recursive,
-                     const FilePathWatcher::Callback& callback) OVERRIDE;
-  virtual void Cancel() OVERRIDE;
+                     const FilePathWatcher::Callback& callback) override;
+  virtual void Cancel() override;
 
  private:
   virtual ~FilePathWatcherFSEvents();
@@ -51,7 +51,7 @@ class FilePathWatcherFSEvents : public FilePathWatcher::PlatformDelegate {
   void StartEventStream(FSEventStreamEventId start_event);
 
   // Cleans up and stops the event stream.
-  virtual void CancelOnMessageLoopThread() OVERRIDE;
+  virtual void CancelOnMessageLoopThread() override;
 
   // Callback to notify upon changes.
   FilePathWatcher::Callback callback_;