Add MatchPropertiesCache printing to STYLE_STATS.

This is useful for trying to improve the cache hit rate.

Review URL: https://chromiumcodereview.appspot.com/19923008

git-svn-id: svn://svn.chromium.org/blink/trunk@154811 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove a bunch of unused stuff from editing

htmlediting.cpp contains a bunch of unused functions we can delete.

R=ojan@chromium.org,eseidel@chromium.org,leviw@chromium.org

Review URL: https://chromiumcodereview.appspot.com/20017006

git-svn-id: svn://svn.chromium.org/blink/trunk@154812 bbb929c8-8fbe-4397-9dbb-9b2b20218538