Examine source code of URL Corrector Kit

{
  "name": "__MSG_extensionName__",
  "author": "Terry",
  "version": "0.2.2",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "icon_16.png",
    "19": "icon_19.png",
    "20": "icon_20.png",
    "24": "icon_24.png",
    "38": "icon_38.png",
    "48": "icon_48.png"
  },
  "permissions": [
    "<all_urls>",
    "contextMenus",
    "webNavigation"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "commands": {
    "_execute_page_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L"
      },
      "description": "__MSG_hotkeyDescription__"
    }
  },
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icon_16.png",
      "19": "icon_19.png",
      "20": "icon_20.png",
      "24": "icon_24.png",
      "38": "icon_38.png",
      "48": "icon_48.png"
    },
    "default_title": "__MSG_pageActionTitle__"
  }
}