Remove ensureResolver before invalidation set scheduling.

ensureResolver() used to make sure the invalidation sets were up-to-
date with the currently active stylesheets. This is no longer necessary
as ruleset invalidation of changes in active stylesheets will make sure
changes are applied correctly.

R=meade@chromium.org
BUG=567021

Review-Url: https://codereview.chromium.org/2555083002
Cr-Commit-Position: refs/heads/master@{#439096}
1 file changed