{
  "background": {
    "page": "background.html"
  },
  "manifest_version": 2,
  "name": "Tab Wrangler",
  "options_page": "popup.html",
  "version": "4.0.0",
  "description": "Automatically closes inactive tabs and makes it easy to get them back",
  "minimum_chrome_version": "28",
  "icons": {
    "128": "img/icon128.png",
    "48": "img/icon48.png",
    "16": "img/icon16.png"
   },
  "browser_action": {
    "default_title": "Tab Wrangler",
    "default_icon": "img/icon.png",
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "img/icon48.png"
  ],
  "permissions": [
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ]
}

{
  "background": {
    "page": "background.html"
  },
  "manifest_version": 2,
  "name": "Tab Wrangler",
  "version": "4.0.0",
  "description": "Automatically closes inactive tabs and makes it easy to get them back",
  "minimum_chrome_version": "28",
  "icons": {
    "128": "img/icon128.png",
    "48": "img/icon48.png",
    "16": "img/icon16.png"
   },
  "browser_action": {
    "default_title": "Tab Wrangler",
    "default_icon": "img/icon.png",
    "default_popup": "popup.html"
  },
  "options_page": "popup.html",
  "options_ui": {
    "page": "popup.html"
  },
  "web_accessible_resources": [
    "img/icon48.png"
  ],
  "permissions": [
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ]
}

Enable options page v2 rendering in chrome://extensions
Enable options page v2 rendering in chrome://extensions

[Options page v2][1] renders extension option pages in a modal on
chrome://extensions if `options_ui` is present in the manifest. Loading
and functionality remains the same.

[1]: https://developer.chrome.com/extensions/optionsV2#step-1