chromium/chrome/test/data/extensions/settings_override/manifest.json

{
  "name": "chrome.extension.settings_override",
  "version": "0.1",
  "manifest_version": 3,
  "description": "end-to-end browser test for chrome.settings_override API",
  "chrome_settings_overrides": {
    "homepage": "http://www.homepage.__MSG_url_domain__/?param=__PARAM__",
    "search_provider": {
        "name": "name.__MSG_url_domain__",
        "keyword": "keyword.__MSG_url_domain__",
        "search_url": "http://www.foo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__",
        "favicon_url": "http://www.foo.__MSG_url_domain__/favicon.ico?id=__PARAM__",
        "suggest_url": "http://www.foo.__MSG_url_domain__/suggest?q={searchTerms}&id=__PARAM__",
        "instant_url": "http://www.foo.__MSG_url_domain__/instant?q={searchTerms}&id=__PARAM__",
        "image_url": "http://www.foo.__MSG_url_domain__/image?q={searchTerms}&id=__PARAM__",
        "search_url_post_params": "search_lang=__MSG_url_domain__",
        "suggest_url_post_params": "suggest_lang=__MSG_url_domain__",
        "instant_url_post_params": "instant_lang=__MSG_url_domain__",
        "image_url_post_params": "image_lang=__MSG_url_domain__",
        "alternate_urls": [
          "http://www.moo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__",
          "http://www.noo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__"
        ],
        "encoding": "UTF-8",
        "prepopulated_id": 83,
        "is_default": true
    },
    "startup_pages": ["http://www.startup.__MSG_url_domain__/?param=__PARAM__"]
   },
   "default_locale": "de"
}