Roll src/third_party/angle/ 197445296..7af63727f (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/1974452966bb..7af63727f058

$ git log 197445296..7af63727f --date=short --no-merges --format='%ad %ae %s'
2017-11-13 oetuaho Fix nullptr dereference on struct parameter error
2017-11-13 oetuaho Fix MSVS 2015 warnings

Created with:
  roll-dep src/third_party/angle
BUG=784158


The AutoRoll server is located here: https://angle-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=ynovikov@chromium.org

Change-Id: I107192c15d2261899e64e715d49c3a5f9f85e68d
Reviewed-on: https://chromium-review.googlesource.com/767048Reviewed-by: angle-deps-roller . <angle-deps-roller@chromium.org>
Commit-Queue: angle-deps-roller . <angle-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516035}

DEPS

@@ -86,7 +86,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': '1974452966bb05cc471f03864274af5c631f6370',
+  'angle_revision': '7af63727f0582dd3a5d563c561dd86161e6105a9',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.