internet_mapper_viewer/browser/manifest.json

{
    "manifest_version": 2,
    "name": "Viewer",
    "version": "0.1",
    "description": "Adds a red border to all webpages matching mozilla.org.",
    "permissions": [
        "activeTab"
    ],
    "browser_action": {
        "default_icon": "icon.png",
        "default_title": "Click me!",
        "default_popup": "popup/popup.html"
    }
}