Roll src/third_party/freetype/src/ 4a03f1744..713d68ee9 (3 commits)

https://chromium.googlesource.com/chromium/src/third_party/freetype2.git/+log/4a03f17449ae..713d68ee9f47

$ git log 4a03f1744..713d68ee9 --date=short --no-merges --format='%ad %ae %s'
2018-02-17 wl [sfnt] Prefer `CBDT'/`CBLC' over `glyf' table (#53154).
2018-02-17 wl Split off ChangeLog.28.
2018-02-17 wl s/sub-pixel/subpixel/.

Created with:
  roll-dep src/third_party/freetype/src

Bug: pdfium:1016
Change-Id: I7fd6f0278075546e9be8a58ff5aa7cc51705f93c
Tbr: bungeman@chromium.org, eae@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/924152Reviewed-by: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537616}

DEPS

@@ -131,7 +131,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling freetype
   # and whatever else without interference from each other.
-  'freetype_revision': '4a03f17449ae45f0dacf4de4694ccd6e5e1b24d1',
+  'freetype_revision': '713d68ee9f47cc8df56e47fa2f54b191bb8c3186',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.