Brian Grinstead [:bgrins] Assignee
	Description • 6 years ago

Right now we only load the chrome Custom Elements in XUL documents (https://searchfox.org/mozilla-central/rev/f0c15db995198a1013e1c5f5b5bea54ef83f1049/toolkit/components/processsingleton/MainProcessSingleton.js#82).

This was done because we get errors when attempting to register them in HTML documents. Those errors will be fixed by Bug 1480465.

We should be careful to not load it in about:blank windows, or at least those loaded during early startup as per https://bugzilla.mozilla.org/show_bug.cgi?id=1442006#c12 and https://bugzilla.mozilla.org/show_bug.cgi?id=1411707#c45.

	Brian Grinstead [:bgrins] Assignee
	Comment 1 • 6 years ago

This provides support for using XUL elements in  chrome XHTML documents,
including the experimental xhtml browser window (browser.xhtml).

	Dave Townsend [:mossop]
	Comment 2 • 6 years ago

Comment on attachment 9001367 [details]
Bug 1481882 - Load customElements.js in chrome XHTML documents;r=mossop

Dave Townsend [:mossop] has approved the revision.

	Pulsebot
	Comment 3 • 6 years ago

Pushed by bgrinstead@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/5a85654da581
Load customElements.js in chrome XHTML documents;r=mossop

	Tiberius Oros[:tiberius_oros]
	Comment 4 • 6 years ago
bugherder

https://hg.mozilla.org/mozilla-central/rev/5a85654da581