1. @DomName('Element.requestPointerLock')
  2. @DocsEditable()
  3. @Experimental()
void requestPointerLock()

Source 

@DomName('Element.requestPointerLock')
@DocsEditable()
@Experimental() // untriaged
void requestPointerLock() =>
    _blink.BlinkElement.instance.requestPointerLock_Callback_0_(this);