Examine source code of No YouTube comments

{
  "manifest_version": 2,
  "version": "0.4resigned1",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "icons/on.svg",
    "96": "icons/on.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/off.svg",
    "browser_style": true
  },
  "commands": {
    "toggle-feature": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "Enable/disable comments"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "*://*.youtube.com/*"
  ],
  "default_locale": "en",
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "24": "icons/on.svg",
      "48": "icons/on.svg",
      "96": "icons/on.svg"
    },
    "default_title": "No youtube comments",
    "default_popup": "popup/popup.html"
  },
  "applications": {
    "gecko": {
      "id": "jid1-YMBCq41qvDdqcA@jetpack",
      "strict_min_version": "48.0"
    }
  }
}