commit 8d5bee68bf505c4c0c4e1369d3a28d7ce021a6ef
author rune <rune@opera.com> Wed Mar 30 16:53:06 2016
committer Commit bot <commit-bot@chromium.org> Wed Mar 30 16:55:00 2016
tree cca82fe50e83bfcabc364ac0b115bf2c4d187773
parent e8166b5772f22f4caffb24054e953aff542274b4

Introduce setNeedsActiveStyleUpdate for adding/removing stylesheets.

Remove the add/remove/modify methods which did not have different
implementations anyway. The plan is to let the async active stylesheet
update detect which StyleSheetContents have been added and which have
been removed and invalidate style and caches accordingly.

I've started to write up the plan here: http://bit.ly/25uxtnU

BUG=567021

Review URL: https://codereview.chromium.org/1843693002

Cr-Commit-Position: refs/heads/master@{#384008}