[1] [CITE@en-US[webNavigation - Mozilla | MDN]]
( ([TIME[2016-05-28 06:59:49 +09:00]]))
<https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/webNavigation>

[2] [CITE[chrome.webNavigation - Google Chrome]]
( ([TIME[2016-06-17 10:01:45 +09:00]]))
<https://developer.chrome.com/extensions/webNavigation>