GetURL = function (file, baseURL)
{
    if (!file.url)
    {
        return false;
    }

    if (file.url.match(/^(?:blob:|data:|capacitor:\/\/|http:\/\/|https:\/\/|\/\/)/))
    {
        return file.url;
    }
    else
    {
        return baseURL + file.url;
    }
}
Given a File and a baseURL value this returns the URL the File will use to download from.

@function Phaser.Loader.GetURL
@since 3.0.0

@param {Phaser.Loader.File} file - The File object.
@param {string} baseURL - A default base URL.

@return {string} The URL the File will use.