Examine source code of smartUp Gestures

{
  "manifest_version": 2,
  "minimum_chrome_version": "22",
  "name": "__MSG_ext_name__",
  "short_name": "smartUp",
  "version": "7.2.622.1170",
  "description": "__MSG_ext_des__",
  "default_locale": "en",
  "author": "zimo",
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "js/purify.js",
      "js/gbk.js",
      "js/background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "js": [
        "js/event.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "browser_action": {
    "default_icon": {
      "19": "icon.png",
      "38": "icon.png"
    },
    "default_title": "smartUp",
    "default_popup": "html/popup.html"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "html/options.html"
  },
  "web_accessible_resources": [
    "image/*",
    "icon.png"
  ],
  "permissions": [
    "tabs",
    "<all_urls>",
    "notifications",
    "storage",
    "contextMenus",
    "unlimitedStorage",
    "management",
    "sessions"
  ],
  "optional_permissions": [
    "browserSettings",
    "downloads",
    "clipboardRead",
    "clipboardWrite",
    "bookmarks",
    "history",
    "topSites"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{77b19bb0-313b-49c8-9e58-cef2e4ebf317}"
    }
  }
}