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

chrome/browser/media_galleries/fileapi/iphoto_data_provider.h

Index: chrome/browser/media_galleries/fileapi/iphoto_data_provider.h
diff --git a/chrome/browser/media_galleries/fileapi/iphoto_data_provider.h b/chrome/browser/media_galleries/fileapi/iphoto_data_provider.h
index 3c78704b4c26baad3e08df8af0e87fd2cbfe80de..26f0ccc91837c1e926f4b7b34d8926831c245a9f 100644
--- a/chrome/browser/media_galleries/fileapi/iphoto_data_provider.h
+++ b/chrome/browser/media_galleries/fileapi/iphoto_data_provider.h
@@ -28,11 +28,11 @@ namespace iphoto {
 class IPhotoDataProvider : public iapps::IAppsDataProvider {
  public:
   explicit IPhotoDataProvider(const base::FilePath& library_path);
-  virtual ~IPhotoDataProvider();
+  ~IPhotoDataProvider() override;
 
   // Parse the library xml file.
-  virtual void DoParseLibrary(const base::FilePath& library_path,
-                              const ReadyCallback& ready_callback) override;
+  void DoParseLibrary(const base::FilePath& library_path,
+                      const ReadyCallback& ready_callback) override;
 
   virtual std::vector<std::string> GetAlbumNames() const;
   virtual std::map<std::string, base::FilePath> GetAlbumContents(