manifest.json

{
    "name": "Workbench Tools for Google Chrome™",
    "description": "Google Chrome™ extension for logging into Workbench from an active Salesforce session.",
    "version": "1.4.0",
    "background": {
        "service_worker": "background.js"
    },
    "manifest_version": 3,
    "icons": {
        "48": "workbench-3-black-cube-48x48.png",
        "128": "workbench-3-cube-128x128.png"
        },
    "options_page": "options.html",
    "permissions": [
        "cookies",
        "declarativeContent",
        "notifications",
        "scripting",
        "storage",
        "tabs"
    ],
    "host_permissions": [
        "https://*.salesforce.com/*",
        "https://*.force.com/*"
    ],
    "content_scripts" : [
        {
        "matches" : [
            "https://*.salesforce.com/*",
            "https://*.force.com/*"
        ],
        "js" : ["showPageAction.js"],
        "run_at" : "document_end",
        "all_frames" : false
        }
    ],
    "action": {
        "default_title": "Login to Workbench from Salesforce",
        "default_icon": "workbench-3-black-cube-48x48.png"
    }
}