Standardize usage of virtual/override/final in content/browser/

content/browser/appcache/appcache_response_unittest.cc

Index: content/browser/appcache/appcache_response_unittest.cc
diff --git a/content/browser/appcache/appcache_response_unittest.cc b/content/browser/appcache/appcache_response_unittest.cc
index b2655b144fff17155d8ee06e56fa9063f52a644c..815e69789c850d500b4584cde68ce37b8950fd55 100644
--- a/content/browser/appcache/appcache_response_unittest.cc
+++ b/content/browser/appcache/appcache_response_unittest.cc
@@ -40,8 +40,8 @@ class AppCacheResponseTest : public testing::Test {
         : loaded_info_id_(0), test_(test) {
     }
 
-    virtual void OnResponseInfoLoaded(AppCacheResponseInfo* info,
-                                      int64 response_id) override {
+    void OnResponseInfoLoaded(AppCacheResponseInfo* info,
+                              int64 response_id) override {
       loaded_info_ = info;
       loaded_info_id_ = response_id;
       test_->ScheduleNextTask();