Remove more stuff from applyAuthorStyles.

Remove more stuff from applyAuthorStyles.

There's a lot of machinery that's realted to <style scoped> and
applyAuthorStyles that's now dead and is just making things slower. Lets
remove it all.

BUG=372083
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=182291

[esprehn, 2014-09-18 23:01:43]

esprehn@chromium.org changed reviewers:
+ dglazkov@chromium.org, kochi@chromium.org, ojan@chromium.org

[kochi, 2014-09-19 01:22:10]

w00t lgtm

I tried this some time ago and for some reason it has
been left in the tree for a month...
https://codereview.chromium.org/447063003/
Probably I tried to remove contextFlags as well but was
not complete then.  Looks almost identical except that part.

Thanks!

[esprehn, 2014-09-19 01:27:37]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2014-09-19 01:28:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/581663003/1

[commit-bot: I haz the power, 2014-09-19 01:34:27]

Committed patchset #1 (id:1) as 182291