Badge counter for Gmail

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "version": "0.1.0",
    "name": "Badge counter for Gmail",
    "description": "Get badge counter for a custom user search query. Click on the toolbar button opens the newest email.",
    "permissions": [
        "alarms",
        "storage",
        "contextMenus",
        "*:\/\/mail.google.com\/mail\/u\/*"
    ],
    "icons": {
        "16": "data\/icons\/16.png",
        "18": "data\/icons\/18.png",
        "19": "data\/icons\/19.png",
        "32": "data\/icons\/32.png",
        "36": "data\/icons\/36.png",
        "38": "data\/icons\/38.png",
        "48": "data\/icons\/48.png",
        "64": "data\/icons\/64.png",
        "128": "data\/icons\/128.png",
        "256": "data\/icons\/256.png"
    },
    "homepage_url": "http:\/\/add0n.com\/badge-counter.html",
    "browser_action": {
        "default_icon": {
            "16": "data\/icons\/16.png",
            "18": "data\/icons\/18.png",
            "19": "data\/icons\/19.png",
            "32": "data\/icons\/32.png",
            "36": "data\/icons\/36.png",
            "38": "data\/icons\/38.png",
            "48": "data\/icons\/48.png",
            "64": "data\/icons\/64.png"
        }
    },
    "background": {
        "persistent": false,
        "scripts": [
            "webext.js",
            "gmail.js",
            "background.js"
        ]
    },
    "content_scripts": [
        {
            "all_frames": true,
            "run_at": "document_start",
            "matches": [
                "*:\/\/mail.google.com\/*"
            ],
            "js": [
                "data\/inject.js"
            ]
        }
    ],
    "options_ui": {
        "page": "data\/options\/index.html",
        "chrome_style": true
    }
}