Examine source code of TF2 Item Context Search

{
  "manifest_version": 2,
  "name": "TF2 Item Context Search",
  "description": "Provides context menus to search for item stats on various sites.",
  "version": "1.0.2",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_icon": "images/icon.png",
    "default_popup": "views/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tf2.context.menus@backpack.tf"
    }
  },
  "background": {
    "page": "views/background.html"
  },
  "web_accessible_resources": [
    "js/content/injects/*.js",
    "js/app/config.js",
    "js/app/storage.js",
    "js/app/browser.js"
  ],
  "permissions": [
    "*://*.tf/*",
    "*://*.store/*",
    "*://*.trade/*",
    "*://*.cash/*",
    "*://*.deals/*",
    "*://*.gg/*",
    "*://steamcommunity.com/*",
    "*://stntrading.eu/*",
    "activeTab",
    "contextMenus",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.tf/*",
        "*://*.store/*",
        "*://*.trade/*",
        "*://*.cash/*",
        "*://*.deals/*",
        "*://*.gg/*",
        "*://steamcommunity.com/*",
        "*://stntrading.eu/*"
      ],
      "js": [
        "js/content/all_urls.js"
      ],
      "css": [
        "css/content/all_urls.css"
      ],
      "run_at": "document_end"
    }
  ],
  "optional_permissions": [
    "<all_urls>"
  ]
}