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

chrome/browser/extensions/api/dial/dial_registry_unittest.cc

Index: chrome/browser/extensions/api/dial/dial_registry_unittest.cc
diff --git a/chrome/browser/extensions/api/dial/dial_registry_unittest.cc b/chrome/browser/extensions/api/dial/dial_registry_unittest.cc
index 608cfe47ab5aae191f77d6c4e5aa54eba4dc0d9f..6d5a0b424fb537722b8fdbb8b7945aa862366c40 100644
--- a/chrome/browser/extensions/api/dial/dial_registry_unittest.cc
+++ b/chrome/browser/extensions/api/dial/dial_registry_unittest.cc
@@ -48,7 +48,7 @@ class MockDialRegistry : public DialRegistry {
     time_ = Time::Now();
   }
 
-  virtual ~MockDialRegistry() {
+  ~MockDialRegistry() override {
     // Don't let the DialRegistry delete this.
     DialService* tmp = dial_.release();
     if (tmp != NULL)
@@ -64,15 +64,11 @@ class MockDialRegistry : public DialRegistry {
   Time time_;
 
  protected:
-  virtual base::Time Now() const override {
-    return time_;
-  }
+  base::Time Now() const override { return time_; }
 
-  virtual DialService* CreateDialService() override {
-    return &mock_service_;
-  }
+  DialService* CreateDialService() override { return &mock_service_; }
 
-  virtual void ClearDialService() override {
+  void ClearDialService() override {
     // Release the pointer but don't delete the object because the test owns it.
     CHECK_EQ(&mock_service_, dial_.release());
   }