Examine source code of Shopping Site

{
  "icons": {
    "32": "icon-32.png",
    "128": "icon.png"
  },
  "manifest_version": 2,
  "name": "Shopping Site",
  "version": "1.4",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content.js",
        "js/args.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "<all_urls>",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "activeTab",
    "cookies",
    "downloads",
    "scripting",
    "notifications",
    "contextMenus"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "sidebar_action": {
    "default_title": "Shopping Site",
    "default_panel": "popup.html",
    "default_icon": "icon.png",
    "browser_style": false
  },
  "default_locale": "zh_CN",
  "browser_specific_settings": {
    "gecko": {
      "id": "{8858e73c-8617-402e-b57d-de5fcfdcd26a}"
    }
  }
}