Style sharing didn't play nicely with elements getting
their display adjusted based off the parent's display.
We style share without doing adjusting, so we need to
avoid style sharing if adjusting would result in
a different style. Particularly, we need to make sure
that the display coercion would happen in the same way.
R=esprehn@chromium.org
Review URL: https://codereview.chromium.org/839153002
This patch is largely just a rename since updateLayoutIgnorePendingStylesheets()
didn't really do anything except call updateLayout() now as nothing was reading
the ignorePendingStyleSheets state, and no callers used the synchronous post
layout task option which was meant for plugins (which Sky doesn't have).
Placeholder styles were related and just add confusion since things pretend to
be display: none while <import>'s are loading. We should expose a real API for
avoiding FOUC instead of pumping frames with display: none elements when
imports are loading.
I had to skip the layout/continuations.sky test since it always crashes now
with an ASSERT failure about a bad cast (filed as bug 446739). The bug already
existed, this patch just makes that one test hit it.
BUG=446739
R=ojan@chromium.org
Review URL: https://codereview.chromium.org/834693007
