code: function makeCanvas(width, height) {
    var c = document.createElement("canvas");
    c.width = width;
    c.height = height;
    // when retina support is enabled, context.getImageData() reads from the wrong pixel causing NinePatch to break
    if (platform.isEjecta()) {
      c.retinaResolutionEnabled = false;
    }
    return c;
  }
docs: Make an invisible {@link canvas}.
  @param {number} width The width of the canvas
  @param {number} height The height of the canvas
  @returns {external:canvas} A canvas DOM element
  @private