1. @DomName('SourceBuffer.remove')
  2. @DocsEditable()
  3. @Experimental()
void remove(num start, num end)

Source 

@DomName('SourceBuffer.remove')
@DocsEditable()
@Experimental() // untriaged
void remove(num start, num end) =>
    _blink.BlinkSourceBuffer.instance.remove_Callback_2_(this, start, end);