replace OVERRIDE and FINAL with override and final in chrome/browser/extensions/

chrome/browser/extensions/api/audio/audio_service.cc

Index: chrome/browser/extensions/api/audio/audio_service.cc
diff --git a/chrome/browser/extensions/api/audio/audio_service.cc b/chrome/browser/extensions/api/audio/audio_service.cc
index e165de206cd0cb585aec4776459d168ee9c798bf..ebccc3f601bde632342a84b3399370e6096f7fbf 100644
--- a/chrome/browser/extensions/api/audio/audio_service.cc
+++ b/chrome/browser/extensions/api/audio/audio_service.cc
@@ -12,16 +12,16 @@ class AudioServiceImpl : public AudioService {
   virtual ~AudioServiceImpl() {}
 
   // Called by listeners to this service to add/remove themselves as observers.
-  virtual void AddObserver(Observer* observer) OVERRIDE;
-  virtual void RemoveObserver(Observer* observer) OVERRIDE;
+  virtual void AddObserver(Observer* observer) override;
+  virtual void RemoveObserver(Observer* observer) override;
 
   // Start to query audio device information.
-  virtual void StartGetInfo(const GetInfoCallback& callback) OVERRIDE;
-  virtual void SetActiveDevices(const DeviceIdList& device_list) OVERRIDE;
+  virtual void StartGetInfo(const GetInfoCallback& callback) override;
+  virtual void SetActiveDevices(const DeviceIdList& device_list) override;
   virtual bool SetDeviceProperties(const std::string& device_id,
                                    bool muted,
                                    int volume,
-                                   int gain) OVERRIDE;
+                                   int gain) override;
 };
 
 void AudioServiceImpl::AddObserver(Observer* observer) {