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

chrome/browser/sync/startup_controller_unittest.cc

Index: chrome/browser/sync/startup_controller_unittest.cc
diff --git a/chrome/browser/sync/startup_controller_unittest.cc b/chrome/browser/sync/startup_controller_unittest.cc
index df775bbec8881a748f0873441072df4d9725cda1..03055920dfa0634dff593367bf2e68fa7d650ab9 100644
--- a/chrome/browser/sync/startup_controller_unittest.cc
+++ b/chrome/browser/sync/startup_controller_unittest.cc
@@ -36,13 +36,9 @@ class FakeSupervisedUserSigninManagerWrapper
  public:
   FakeSupervisedUserSigninManagerWrapper()
       : SupervisedUserSigninManagerWrapper(NULL, NULL) {}
-  virtual std::string GetEffectiveUsername() const override {
-    return account_;
-  }
+  std::string GetEffectiveUsername() const override { return account_; }
 
-  virtual std::string GetAccountIdToUse() const override {
-    return account_;
-  }
+  std::string GetAccountIdToUse() const override { return account_; }
 
   void set_account(const std::string& account) { account_ = account; }