Tracks status of AboutThisSite queries.

A valid response. No result received. SiteInfo is missing. SiteInfo is empty. kIncompleteDescription - deprecated. Source is incomplete. Source URL is invalid. Timestamp is incomplete. Timestamp is invalid. User has not opted in to Optimization guide. Description is missing. Description field in description is missing. Name is missing. Lang is missing. Source is missing. Banner info is missing. MoreAbout URL is invalid. MoreAbout URL is missing. No fallback Fast-fallback timer fired Misconfigured HTTPS certificate Redirect loop (downgrade) Other network error Unknown reason The interstitial was shown because the user enabled the UI pref. The interstitial was shown because the user is enrolled in Advanced Protection, which enables HTTPS-First Mode. The interstitial was shown because of the Site Engagement heuristic. The interstitial was shown because of the Typically Secure User heuristic. The interstitial was shown because the user was in Incognito mode and HTTPS-First Mode in Incognito was enabled. The interstitial was shown because the user was in balanced mode. The interstitial was shown because HFM was enabled via ESB pairing. Upgrade attempted Upgrade succeeded Upgrade failed (for any reason) Upgrade failed due to cert error Upgrade failed due to net error Upgrade failed due to timing out Prerender navigation cancelled Upgrade not attempted because not enabled Upgrade failed due to a redirect loop Typed schemeless upgrade attempted Typed schemeless upgrade succeeded Typed schemeless upgrade timed out (no-fallback) Page info with merchant trust row was shown. The merchant trust bubble was opened from the page info row. The merchant trust side panel was opened. The merchant trust bubble was closed. The merchant trust side panel was closed. (Deprecated) The merchant trust bubble was opened from the location bar chip. The merchant trust side panel remained open from a same tab navigation. The merchant trust bubble was closed on a same tab navigation. A valid response. No result received. Rating count is missing. Rating value is missing. Reviews summary is missing. Reviews page URL is missing. Reviews page URL is invalid. A valid response with missing reviews summary. Page lifetime has not yet ended (page is still active) Page was reloaded Page was navigated away from, via a back or forward navigation Page was redirected via Javascript or the meta refresh tag Page load was replaced by a new navigation Page load was stopped Page load ended due to closing the tab or browser Provisional load for this page load failed before comitting Render process hosting the page terminated unexpectedly Unknown reason; page load may have finished without comitting Page became hidden, but is still active. The metrics were flushed because the app entered the background. Succeeded on first try Succeeded after retrying Failed after exhausting retries