Roll src/third_party/freetype/src/ 38bdf22bf..7e5082428 (5 commits)

https://chromium.googlesource.com/chromium/src/third_party/freetype2.git/+log/38bdf22bfe68..7e50824288fa

$ git log 38bdf22bf..7e5082428 --date=short --no-merges --format='%ad %ae %s'
2017-08-01 wl * src/truetype/ttgxvar.c (TT_Get_MM_Var): Fix thinko.
2017-08-01 wl Update CHANGES file.
2017-08-01 behdad [truetype] Fix loading of named instances.
2017-08-01 wl [sfnt, truetype] Minor adjustments for OpenType 1.8.2.
2017-07-26 wl [cff] Integer overflow.

Created with:
  roll-dep src/third_party/freetype/src
R=wangxianzhu@chromium.org,michaelbai@chromium.org,bungeman@chromium.org,drott@chromium.org

BUG=chromium:738343

Change-Id: If5ac9de7dce76fdf808cfb1d7c95125784831708
Reviewed-on: https://chromium-review.googlesource.com/598118
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491676}

DEPS

@@ -92,7 +92,7 @@ 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': '38bdf22bfe68432aebdd33c198a0bd11b4ebb96f',
+  'freetype_revision': '7e50824288fac5a36c2938fdb3e1c949ea53f982',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.

third_party/freetype/README.chromium

 Name: FreeType
 URL: http://www.freetype.org/
-Version: VER-2-8-73
-Revision: 38bdf22bfe68432aebdd33c198a0bd11b4ebb96f
+Version: VER-2-8-78
+Revision: 7e50824288fac5a36c2938fdb3e1c949ea53f982
 License: Custom license "inspired by the BSD, Artistic, and IJG (Independent
          JPEG Group) licenses"
 License File: src/docs/FTL.TXT