Standardize usage of virtual/override/final in chrome/browser/signin/

chrome/browser/signin/fake_account_reconcilor.h

Index: chrome/browser/signin/fake_account_reconcilor.h
diff --git a/chrome/browser/signin/fake_account_reconcilor.h b/chrome/browser/signin/fake_account_reconcilor.h
index b3907d5fd02aee153928d4a1d6b86904326aaa40..6e3b6c9b164256ae2d5026956a6d15ab2937670a 100644
--- a/chrome/browser/signin/fake_account_reconcilor.h
+++ b/chrome/browser/signin/fake_account_reconcilor.h
@@ -22,8 +22,7 @@ class FakeAccountReconcilor : public AccountReconcilor {
  protected:
   // Override this method to perform no network call, instead the callback
   // is called immediately
-  virtual void GetAccountsFromCookie(GetAccountsFromCookieCallback callback)
-      override;
+  void GetAccountsFromCookie(GetAccountsFromCookieCallback callback) override;
 
   DISALLOW_COPY_AND_ASSIGN(FakeAccountReconcilor);
 };