replace OVERRIDE and FINAL with override and final in chrome/browser/extensions/

chrome/browser/extensions/default_apps_unittest.cc

Index: chrome/browser/extensions/default_apps_unittest.cc
diff --git a/chrome/browser/extensions/default_apps_unittest.cc b/chrome/browser/extensions/default_apps_unittest.cc
index f84244fb5b070c6717a2142331cbf48eb1c9e16f..770afe99a0f0a149186feeb6edc8892a89f38b67 100644
--- a/chrome/browser/extensions/default_apps_unittest.cc
+++ b/chrome/browser/extensions/default_apps_unittest.cc
@@ -22,7 +22,7 @@ class MockExternalLoader : public ExternalLoader {
  public:
   MockExternalLoader() {}
 
-  virtual void StartLoading() OVERRIDE {}
+  virtual void StartLoading() override {}
  private:
   virtual ~MockExternalLoader() {}
 };
@@ -74,7 +74,7 @@ TEST_F(DefaultAppsTest, Install) {
 
   class DefaultTestingProfile : public TestingProfile {
     virtual  bool WasCreatedByVersionOrLater(
-        const std::string& version) OVERRIDE {
+        const std::string& version) override {
       return false;
     }
   };