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

chrome/browser/sync/sync_policy_handler.h

Index: chrome/browser/sync/sync_policy_handler.h
diff --git a/chrome/browser/sync/sync_policy_handler.h b/chrome/browser/sync/sync_policy_handler.h
index 49504182b58dba45b6c2bd096e6962088b009500..06426144943e35c07b88e3d671a440d9e5727f0a 100644
--- a/chrome/browser/sync/sync_policy_handler.h
+++ b/chrome/browser/sync/sync_policy_handler.h
@@ -18,11 +18,11 @@ class PolicyMap;
 class SyncPolicyHandler : public policy::TypeCheckingPolicyHandler {
  public:
   SyncPolicyHandler();
-  virtual ~SyncPolicyHandler();
+  ~SyncPolicyHandler() override;
 
   // ConfigurationPolicyHandler methods:
-  virtual void ApplyPolicySettings(const policy::PolicyMap& policies,
-                                   PrefValueMap* prefs) override;
+  void ApplyPolicySettings(const policy::PolicyMap& policies,
+                           PrefValueMap* prefs) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncPolicyHandler);