code: func (c *Page) SetFontSizesWithParams(v *PageSetFontSizesParams) (*gcdmessage.ChromeResponse, error) {
  	return gcdmessage.SendDefaultRequest(c.target, c.target.GetSendCh(), &gcdmessage.ParamRequest{Id: c.target.GetId(), Method: "Page.setFontSizes", Params: v})
  }
docs: // SetFontSizesWithParams - Set default font sizes.