Google Chrome extension to disable download bar that automatically appears when download is started

background.js

chrome.runtime.onInstalled.addListener(() => {
    chrome.downloads.setShelfEnabled(false)
})

chrome.runtime.onStartup.addListener(() => {
    chrome.downloads.setShelfEnabled(false)
})

manifest.json

{
    "name": "Disable Shelf",
    "version": "1.0",
    "manifest_version": 2,
    "permissions": ["downloads", "downloads.shelf"],
    "background": {
        "scripts": ["background.js"],
        "persistent": false
    }
}