Examine source code of Mendeley Web Importer

{
  "manifest_version": 2,
  "name": "Mendeley Web Importer",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "icons": {
    "16": "assets/logo16.png",
    "48": "assets/logo48.png",
    "128": "assets/logo128.png"
  },
  "browser_action": {
    "default_icon": "assets/logo48.png",
    "default_title": "Mendeley Web Importer"
  },
  "permissions": [
    "<all_urls>",
    "cookies",
    "downloads",
    "notifications",
    "storage",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Ctrl+Shift+L",
        "mac": "Command+Shift+L",
        "chromeos": "Ctrl+Shift+L",
        "linux": "Ctrl+Shift+L"
      }
    }
  },
  "applications": {
    "gecko": {
      "id": "webapps@mendeley.com"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "incognito": "spanning",
  "version": "3.2.78",
  "web_accessible_resources": [
    "index.html",
    "enhanced-reader.html",
    "reader.js",
    "reader-style.js",
    "fonts/NexusSansWebPro-Bold.*",
    "fonts/NexusSansWebPro-Regular.*",
    "assets/logoTransparent.png"
  ]
}