Gmail API Extension

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Gmail API Extension",
    "version": "1.0",
    "manifest_version": 2,
    "description": "Gmail API Extension",
    "permissions": [
        "identity",
        "*:\/\/*.google.com\/*"
    ],
    "background": {
        "scripts": [
            "base64.js",
            "background.js"
        ]
    },
    "content_security_policy": "script-src https:\/\/*.google.com 'unsafe-eval'; object-src 'self'",
    "oauth2": {
        "client_id": "",
        "scopes": [
            "https:\/\/www.googleapis.com\/auth\/gmail.modify"
        ]
    }
}