AppMenuObserver 30 chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenuHandler.java private final ArrayList<AppMenuObserver> mObservers; AppMenuObserver 47 chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenuHandler.java mObservers = new ArrayList<AppMenuObserver>(); AppMenuObserver 131 chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenuHandler.java public void addObserver(AppMenuObserver observer) { AppMenuObserver 139 chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenuHandler.java public void removeObserver(AppMenuObserver observer) {