This is similar to bug 457809 but for stylesheets.

Assuming you have the nsIDocument involved in |doc|, the URI of the sheet in |uri| and an nsICSSLoaderObserver implementation (probably one which just does "return NS_OK;" as the body of StyleSheetLoaded) in |obs|: doc->CSSLoader()->LoadSheet(uri, doc->NodePrincipal(), obs); will do the trick, since CSSLoader already caches loaded sheets and already coalesces sheet loads. You probably want to avoid doing this for alternate stylesheets, though, since currently we deprioritize them and forcing them to load earlier could actually slow sites that use them down.

See patch for bug #457809

This is the part of patch from bug #457809 needed to preload stylesheets. See bug #457809 comment #45. Requesting another round of reviews just in case...

This can be applied without the fix for bug #457809. Not tested beyond mochitests and some random browsing since it's a trivial code-shuffle.

Pushed http://hg.mozilla.org/mozilla-central/rev/bf5cf25cdd3c with the following changes to the patch: 1) No changes to nsIDocument IID 2) Fixed checkin comment. Unfortunately, I missed the fact that the patch doesn't have the right user set. :(

Must have shuffled code a little too fast this morning... :\ thanks for fixing up. :) (Apparently hg qfold does not preserve user-info. Must remember to check this next time!)

Tp is looking good, on both Linux and Mac!

We should probably fix bug 485012 before landing this on branch.

Identical to V2.0 but with issues from comment #5 fixed.

Comment on attachment 372430 [details] [diff] [review] V2.0 for 1.9.1 branch a191=beltzner

Pushed http://hg.mozilla.org/releases/mozilla-1.9.1/rev/88bf56a8362c

And pushed http://hg.mozilla.org/releases/mozilla-1.9.1/rev/e36f8c547a96 to fix the resulting test bustage due to the test fix from bug 457809 never making it to branch....