Examine source code of SearchSK

{
  "manifest_version": 2,
  "name": "SearchSK",
  "author": "Andrey Shemetov",
  "description": "__MSG_addonDesc__",
  "version": "1.0",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "{e438e0af-31eb-4c83-820a-e1c7ff2a62ef}"
    }
  },
  "icons": {
    "16": "icons/search_16.png",
    "24": "icons/search_24.png",
    "32": "icons/search_32.png",
    "48": "icons/search_48.png",
    "64": "icons/search_64.png",
    "128": "icons/search_128.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/search_16.png",
      "24": "icons/search_24.png",
      "32": "icons/search_32.png",
      "48": "icons/search_48.png",
      "64": "icons/search_64.png",
      "128": "icons/search_128.png"
    },
    "default_title": "SearchSK",
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+8"
      },
      "description": "Open SearchSK"
    }
  },
  "options_ui": {
    "browser_style": true,
    "page": "prefs/prefs.html"
  },
  "background": {
    "scripts": [
      "common.js",
      "utils.js",
      "favicons.js",
      "opensearch.js",
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "alarms",
    "bookmarks",
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content.css"
      ],
      "js": [
        "libs/mark.js",
        "common.js",
        "utils.js",
        "opensearch.js",
        "content.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "icons/*"
  ]
}