dispatchAccessibilityFeaturesChanged method
Notify all the observers that the active set of AccessibilityFeatures
has changed (using ElementsBindingObserver.didChangeAccessibilityFeatures),
giving them the features
argument.
This is called by handleAccessibilityFeaturesChanged when the
Window.onAccessibilityFeaturesChanged
notification is received.
Implementation
@protected
@mustCallSuper
void dispatchAccessibilityFeaturesChanged() {
for (ElementsBindingObserver observer in _observers) observer.didChangeAccessibilityFeatures();
}