testGetVendorStyleNameWebkitNoPrefix() {
    const mockElement = {
      'style': {'WebkitTransformOrigin': '', 'transformOrigin': ''},
    };

    assertUserAgent([UserAgents.WEBKIT], 'WebKit');
    assertEquals(
        'transform-origin',
        googStyle.getVendorStyleName_(mockElement, 'transform-origin'));
  }
Test for the proper vendor style name for a CSS property
when it exists without a vendor prefix for Webkit.
@suppress {visibility,checkTypes} suppression added to enable type checking