Double-click pronounce

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "name": "Double-click pronounce",
    "version": "2.5",
    "description": "Never doubt how to pronounce a word. Better your spoken languages!",
    "icons": {
        "48": "icons\/border-48.png"
    },
    "background": {
        "persistent": false,
        "scripts": [
            "browser-polyfill.js"
        ]
    },
    "content_scripts": [
        {
            "matches": [
                ""
            ],
            "js": [
                "browser-polyfill.js",
                "pronounce.js"
            ]
        }
    ],
    "options_ui": {
        "page": "options.html"
    },
    "permissions": [
        "tabs",
        "storage",
        "management"
    ],
    "browser_specific_settings": {
        "gecko": {
            "id": "{f8716d82-2c5c-430d-b783-5473310342cf}"
        }
    },
    "browser_action": {
        "default_icon": {
            "32": "icons\/border-48.png"
        },
        "default_title": "Pronounce",
        "default_popup": "options.html"
    }
}