No forced active stylesheet recollect when pending sheets reach 0.
We forced a FullStyleUpdate which causes an active stylesheet update
for all tree scopes in the presence of placeholder style. What we need
to do for placeholder style is to trigger a full style recalc. For
instance, we don't need to update active stylesheets in shadow trees
if the last blocking resource that finishes loading is a document scope
stylesheet or import.
BUG=567021
Review-Url: https://codereview.chromium.org/2500923002
Cr-Commit-Position: refs/heads/master@{#432630}
1 file changed
