Making MHTML files CRLF eol in an attempt to get trybots to work for my CL: 
https://codereview.chromium.org/161383002/ 

Same as LGTMed CL:
https://codereview.chromium.org/184113009/

R=ojan
BUG=None 
TEST=LayoutTests should still pass

Review URL: https://codereview.chromium.org/196503002

git-svn-id: svn://svn.chromium.org/blink/trunk@169036 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Don't process pending style sheets during style invalidation.

In particular, don't do it while clearing out invalidation during the process of resetting
the StyleResolver object. But the same reasoning applies in other scenarios, since
processing style invalidation is always about processing w.r.t the RuleFeatureSet as
it is presently.

Rename ensureRuleFeatureSet to more clearly indicate that it ensures an up-to-date
RuleFeatureSet, including processing pending style sheets. Also fix up the clear() method
in RuleFeatureSet to clear all data structures.

BUG=351212

Review URL: https://codereview.chromium.org/194693004

git-svn-id: svn://svn.chromium.org/blink/trunk@169037 bbb929c8-8fbe-4397-9dbb-9b2b20218538