replace OVERRIDE and FINAL with override and final in components/

components/signin/core/browser/signin_tracker.h

Index: components/signin/core/browser/signin_tracker.h
diff --git a/components/signin/core/browser/signin_tracker.h b/components/signin/core/browser/signin_tracker.h
index 0e093e2aa303c416cedaa2242f5f8f7aef148455..a45dedf86f8a0625ed37deeb88825c623c081129 100644
--- a/components/signin/core/browser/signin_tracker.h
+++ b/components/signin/core/browser/signin_tracker.h
@@ -78,11 +78,11 @@ class SigninTracker : public SigninManagerBase::Observer,
   virtual ~SigninTracker();
 
   // SigninManagerBase::Observer implementation.
-  virtual void GoogleSigninFailed(const GoogleServiceAuthError& error) OVERRIDE;
+  virtual void GoogleSigninFailed(const GoogleServiceAuthError& error) override;
 
   // OAuth2TokenService::Observer implementation.
-  virtual void OnRefreshTokenAvailable(const std::string& account_id) OVERRIDE;
-  virtual void OnRefreshTokenRevoked(const std::string& account_id) OVERRIDE;
+  virtual void OnRefreshTokenAvailable(const std::string& account_id) override;
+  virtual void OnRefreshTokenRevoked(const std::string& account_id) override;
 
  private:
   // Initializes this by adding notifications and observers.
@@ -91,7 +91,7 @@ class SigninTracker : public SigninManagerBase::Observer,
   // MergeSessionHelper::Observer implementation.
   virtual void MergeSessionCompleted(
       const std::string& account_id,
-      const GoogleServiceAuthError& error) OVERRIDE;
+      const GoogleServiceAuthError& error) override;
 
   // The classes whose collective signin status we are tracking.
   ProfileOAuth2TokenService* token_service_;