Using chrome.mediaGalleries API to get the names of the user's galleries

I'm attempting to use the chrome.getMediaGalleries API to list the media galleries on a user's device. It works right up until the item.name part.

I watched a video from the Google Developers youtube channel, in which they used JSON.parse. However, that throws an Uncaught SyntaxError: Unexpected token c in JSON at position 0 as to be expected. It's not JSON.

So my question to you is: how do I retrieve the human-readable (Videos, Music, etc.). Here is my code so far:

getGalleriesInfo(/*Array of DOMFileSystem objects*/ results) {

    if (!results.length)
        return console.log('No galleries found');

    console.log('Gallery count: ' + results.length);

    results.forEach((item, index) => {
        let gallery = item.name;// JSON.parse(item.name) doesn't work
        console.log(index, ' => ', gallery); // 0 => chrome-extension_hmnfbbnkjlgjgmlgpacnkkndfidbejpo_0:External_media_galleries-Default-hmnfbbnkjlgjgmlgpacnkkndfidbejpo-1, etc.
    });
}

// I'm using a custom element (document.registerElement)
createdCallback() {
    chrome.mediaGalleries.getMediaFileSystems({
        interactive: 'if_needed'
    }, this.getGalleriesInfo);
}

• The chrome.mediaGalleries API docs
• The DOMFileSystem docs
• JSON.parse docs for good measure

Thanks,
Justin

EDIT: Chrome debugger view of item
_{(source: jtprogramming.com)}

The chrome.getMediaGalleries API appears to have changed. To find the name of any given gallery you must use the getMediaFileSystemMetadata method.

_getGalleriesInfo(results) {

    if (!results.length)
        return console.log('No galleries found');

    console.log('Gallery count: ' + results.length);

    results.forEach((item, index) => {
        console.log(chrome.mediaGalleries.getMediaFileSystemMetadata(item));
    });
}

which returns an object with the metadata of the DOMFileSystem.

Object {
    galleryId: (string) int,
    isAvailable: boolean, 
    isMediaDevice: boolean,
    isRemovable: boolean, 
    name: "C:\example\path\to\gallery"
}