Heart React for Messenger

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Heart React for Messenger",
    "description": "Adds the \u2764\ufe0f heart \u2764\ufe0f reaction to Facebook Messenger reactions",
    "version": "1.6.1",
    "manifest_version": 2,
    "icons": {
        "16": "icons\/icon16.png",
        "32": "icons\/icon32.png",
        "48": "icons\/icon48.png",
        "64": "icons\/icon64.png",
        "128": "icons\/icon128.png"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/www.facebook.com\/messages\/*",
                "http:\/\/www.facebook.com\/messages\/*",
                "https:\/\/www.messenger.com\/*",
                "http:\/\/www.messenger.com\/*",
                "https:\/\/www.facebook.com\/*",
                "http:\/\/www.facebook.com\/*"
            ],
            "js": [
                "js\/inject-script.js"
            ],
            "all_frames": true,
            "run_at": "document_end"
        }
    ],
    "web_accessible_resources": [
        "js\/fb-heart-react.js"
    ]
}