Examine source code of hipda helper

{
  "name": "hipda helper",
  "version": "0.675",
  "description": "hipda助手扩展",
  "permissions": [
    "storage",
    "webRequest",
    "*://*.4d4y.com/*"
  ],
  "background": {
    "scripts": [
      "jquery3.js",
      "gbk.js",
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "fqxufo@gmail.com",
      "strict_min_version": "53.0"
    }
  },
  "omnibox": {
    "keyword": "hi"
  },
  "icons": {
    "16": "images/16x.png",
    "32": "images/32x.png",
    "48": "images/48x.png",
    "128": "images/128x.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_title": "hipda助手插件",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "popup/popup.html",
    "open_in_tab": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.4d4y.com/forum/*"
      ],
      "js": [
        "jquery3.js",
        "gbk.js",
        "contentscript.js",
        "topcolor.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "clouddemo.html",
    "main.js"
  ]
}