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

chrome/browser/policy/chrome_browser_policy_connector.h

Index: chrome/browser/policy/chrome_browser_policy_connector.h
diff --git a/chrome/browser/policy/chrome_browser_policy_connector.h b/chrome/browser/policy/chrome_browser_policy_connector.h
index b0e3ccee2ca301d69992d23cb8fd8a05f570276f..ecca2f6ffa01a8df245b62266264db3447a3d06b 100644
--- a/chrome/browser/policy/chrome_browser_policy_connector.h
+++ b/chrome/browser/policy/chrome_browser_policy_connector.h
@@ -31,9 +31,9 @@ class ChromeBrowserPolicyConnector : public BrowserPolicyConnector {
   // Init() should be called to create and start the policy machinery.
   ChromeBrowserPolicyConnector();
 
-  virtual ~ChromeBrowserPolicyConnector();
+  ~ChromeBrowserPolicyConnector() override;
 
-  virtual void Init(
+  void Init(
       PrefService* local_state,
       scoped_refptr<net::URLRequestContextGetter> request_context) override;