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

content/browser/indexed_db/indexed_db_unittest.cc

Index: content/browser/indexed_db/indexed_db_unittest.cc
diff --git a/content/browser/indexed_db/indexed_db_unittest.cc b/content/browser/indexed_db/indexed_db_unittest.cc
index 6fbff66ad1e297e793920c55b6370fdd783caf69..ddb1fdc66bd281bb8c8f8314b9c63823e2e37428 100644
--- a/content/browser/indexed_db/indexed_db_unittest.cc
+++ b/content/browser/indexed_db/indexed_db_unittest.cc
@@ -130,10 +130,10 @@ class ForceCloseDBCallbacks : public IndexedDBCallbacks {
         idb_context_(idb_context),
         origin_url_(origin_url) {}
 
-  virtual void OnSuccess() override {}
-  virtual void OnSuccess(const std::vector<base::string16>&) override {}
-  virtual void OnSuccess(scoped_ptr<IndexedDBConnection> connection,
-                         const IndexedDBDatabaseMetadata& metadata) override {
+  void OnSuccess() override {}
+  void OnSuccess(const std::vector<base::string16>&) override {}
+  void OnSuccess(scoped_ptr<IndexedDBConnection> connection,
+                 const IndexedDBDatabaseMetadata& metadata) override {
     connection_ = connection.Pass();
     idb_context_->ConnectionOpened(origin_url_, connection_.get());
   }
@@ -141,7 +141,7 @@ class ForceCloseDBCallbacks : public IndexedDBCallbacks {
   IndexedDBConnection* connection() { return connection_.get(); }
 
  protected:
-  virtual ~ForceCloseDBCallbacks() {}
+  ~ForceCloseDBCallbacks() override {}
 
  private:
   scoped_refptr<IndexedDBContextImpl> idb_context_;