Split more files off StyleResolver.

Move MatchResult (and minions), MatchedPropertiesCache, and MediaQueryResult
into their own files.

BUG=237268
R=eae@chromium.org, eseidel@chromium.org

Review URL: https://codereview.chromium.org/19020002

git-svn-id: svn://svn.chromium.org/blink/trunk@154133 bbb929c8-8fbe-4397-9dbb-9b2b20218538