Pencil Explore for Chrome

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Pencil Explore for Chrome",
  "version": "0.1.34",
  "description": "Keep learning with Pencil for Chrome",
  "manifest_version": 2,
  "icons": {
    "16": "assets/icons/pencilExtension_16x16.png",
    "48": "assets/icons/pencilExtension_48x48.png",
    "128": "assets/icons/pencilExtension_128x128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/icons/pencilExtension_16x16.png",
      "48": "assets/icons/pencilExtension_48x48.png",
      "128": "assets/icons/pencilExtension_128x128.png"
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "oauth2": {
    "client_id": "989623765250-nodelcr59f7ls0pup11sfhdoh4hb9jsa.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email"
    ]
  },
  "web_accessible_resources": [
    "index.html",
    "sidebar/*",
    "assets/*"
  ],
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery.min.js",
        "mark.min.js",
        "sidebar/sidebar-loader.js"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' https://www.gstatic.com https://apis.google.com/ https://maxcdn.bootstrapcdn.com https://www.google-analytics.com https://www.googletagmanager.com; object-src 'self';"
}