(and hopefully the last ones, for real...)

The process is the same as previous:
rebaseline-cl --builders=<all mac ports...> <list of failures>

Two changes in TestExpectations:
1. fast/encoding/denormalised-voiced-japanese-chars.html also fails on
   Mac 10.13, which seems to be expected considering it fails on all
   previous Mac versions the same way.
2. editing/caret/caret-color.html isn't in SmokeTests anymore (i.e. the
   test doesn't run on Android).

Bug: 774301, 545140, 595483
Change-Id: Ie37cc7f6b3837ad520807c52ebce56b4b464938c
Reviewed-on: https://chromium-review.googlesource.com/947803Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540817}