Examine source code of App for Hangouts™

{
  "version": "0.1.10resigned1",
  "manifest_version": 2,
  "permissions": [
    "storage"
  ],
  "name": "App for Hangouts™",
  "short_name": "appforhangouts",
  "background": {
    "page": "lib/chrome/background.html"
  },
  "description": "An easy-to-use and lite App for Google Hangouts",
  "homepage_url": "http://mybrowseraddon.com/google-hangout-panel.html",
  "content_scripts": [
    {
      "matches": [
        "*://hangouts.google.com/"
      ],
      "js": [
        "data/content_script/inject.js"
      ],
      "css": [
        "data/content_script/inject.css"
      ]
    }
  ],
  "browser_action": {
    "default_title": "App for Hangouts™",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jid1-f7mDMrGyz2W3Yp@jetpack"
    }
  }
}