Examine source code of Huddle.team Scheduler

{
  "name": "__MSG_extName__",
  "short_name": "__MSG_extShortName__",
  "version": "0.0.6.0",
  "manifest_version": 2,
  "description": "__MSG_extDescription__",
  "minimum_chrome_version": "29",
  "permissions": [
    "storage",
    "identity",
    "*://*.huddle.team/*"
  ],
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "icons": {
    "16": "icons/dock_icon_16x16_active.png",
    "48": "icons/dock_icon_48x48_active.png",
    "128": "icons/dock_icon_128x128_active.png"
  },
  "page_action": {
    "default_icon": {
      "16": "icons/dock_icon_16x16.png",
      "48": "icons/dock_icon_48x48.png",
      "128": "icons/dock_icon_128x128.png"
    },
    "default_title": "__MSG_extDefaultTitle__"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "*://calendar.google.com/*"
      ],
      "js": [
        "content.bundle.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "default_locale": "en",
  "web_accessible_resources": [
    "images/*.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "scheduler@huddle.team"
    }
  }
}