Standardize usage of virtual/override/final in chrome/

chrome/utility/media_galleries/picasa_albums_indexer.cc

Index: chrome/utility/media_galleries/picasa_albums_indexer.cc
diff --git a/chrome/utility/media_galleries/picasa_albums_indexer.cc b/chrome/utility/media_galleries/picasa_albums_indexer.cc
index 420672df3d010d7f33144ec35645734c8d630638..e99a1412f2015b8c2076167b188d8dc23f17b30d 100644
--- a/chrome/utility/media_galleries/picasa_albums_indexer.cc
+++ b/chrome/utility/media_galleries/picasa_albums_indexer.cc
@@ -28,12 +28,12 @@ class PicasaINIParser : public INIParser {
       : folder_path_(folder_path),
         albums_images_(albums_images) {
   }
-  virtual ~PicasaINIParser() {}
+  ~PicasaINIParser() override {}
 
  private:
-  virtual void HandleTriplet(const std::string& section,
-                             const std::string& key,
-                             const std::string& value) override {
+  void HandleTriplet(const std::string& section,
+                     const std::string& key,
+                     const std::string& value) override {
     if (key != kAlbumsKey)
       return;