Examine source code of Push2Droid

{
  "background": {
    "scripts": [
      "auth.js",
      "send_logic.js",
      "background.js",
      "jquery-2.1.4.min.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/app_icon_128.png",
    "default_popup": "popup.html"
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; child-src 'self'",
  "default_locale": "en",
  "description": "__MSG_app_desc__",
  "icons": {
    "16": "icons/app_icon_16.png",
    "32": "icons/app_icon_32.png",
    "48": "icons/app_icon_48.png",
    "96": "icons/app_icon_96.png",
    "128": "icons/app_icon_128.png"
  },
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "push2droid@wallaceit.com.au",
      "strict_min_version": "45.0"
    }
  },
  "name": "__MSG_app_name__",
  "oauth2": {
    "client_id": "438674089204-recs6rtr58i0qaf256rmtr9oiao55hu9.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email"
    ]
  },
  "options_page": "help.html",
  "permissions": [
    "contextMenus",
    "tabs",
    "webNavigation",
    "http://*/*",
    "https://*/*"
  ],
  "short_name": "__MSG_app_name__",
  "version": "0.9.5resigned1",
  "web_accessible_resources": [
    "signin.html",
    "help.html"
  ]
}