Roll pdfium/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 pdfium/third_party/freetype/src

BUG=pdfium:1016

Change-Id: Ib7846b5234cc1cf5a85cf557cc37f74144b592c6
Reviewed-on: https://pdfium-review.googlesource.com/27491
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/DEPS b/DEPS
index e319484..60a4635 100644
--- a/DEPS
+++ b/DEPS
@@ -21,7 +21,7 @@
   'clang_revision': 'a695c30c8618b948d714a2a8161ee6a2ab98d0ce',
   'cygwin_revision': 'c89e446b273697fadf3a10ff1007a97c0b7de6df',
   'depot_tools_revision': '2e8d8348b8574f06c26dbf3ef959b5df11ba5148',
-  'freetype_revision': '4a03f17449ae45f0dacf4de4694ccd6e5e1b24d1',
+  'freetype_revision': '713d68ee9f47cc8df56e47fa2f54b191bb8c3186',
   'gmock_revision': '29763965ab52f24565299976b936d1265cb6a271',
   'gtest_revision': '8245545b6dc9c4703e6496d1efd19e975ad2b038',
   'icu_revision': 'e3b480d3be4446ea17011c0cdc9c4cd380a5c58f',