Resolve FIXME in Document: if style invalidation needs to be updated, then there must be a style resolver, since there is no longer a style resolver timer and the only code that could have registered invalidation dirty bits is inside the style resolver.
Resolve FIXME in Document: if style invalidation needs to be updated, then there must be
a style resolver, since there is no longer a style resolver timer and the only code that
could have registered invalidation dirty bits is inside the style resolver.

BUG=

Review URL: https://codereview.chromium.org/171793004

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@167461 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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