Roll src/third_party/angle/ aac6df40a..690c8eb7f (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/aac6df40a2b5..690c8eb7f2d2

$ git log aac6df40a..690c8eb7f --date=short --no-merges --format='%ad %ae %s'
2018-03-12 jmadill Framebuffer: syncState before internal format query.
2018-03-13 jdarpinian Optimize buffer deletion by returning early if buffer is not bound.

Created with:
  roll-dep src/third_party/angle


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=cwallez@chromium.org

Change-Id: Iee8415867fa06b64dfcd5ff0329d92ed0137bb3b
Reviewed-on: https://chromium-review.googlesource.com/961559Reviewed-by: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#542977}

DEPS

@@ -91,7 +91,7 @@ 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': 'aac6df40a2b5241f5a932df94a59c36bc5ce936c',
+  'angle_revision': '690c8eb7f2d24e6870f87a730730155a2a38dec9',
   # 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.