Roll src/third_party/angle/ 5dd4ad896..6969132c1 (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/5dd4ad896bcb..6969132c134f

$ git log 5dd4ad896..6969132c1 --date=short --no-merges --format='%ad %ae %s'
2018-01-30 yunchao.he ES31: update deqp tests for renderbuffer integer formats.
2018-01-29 jmadill Vulkan: Fix swaps done right after a clear.

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=jmadill@chromium.org

Change-Id: I8cf7d9b21eeca69753962426b5c83663a090f587
Reviewed-on: https://chromium-review.googlesource.com/893202
Commit-Queue: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#532925}

DEPS

@@ -95,7 +95,7 @@ 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': '5dd4ad896bcb69b7e3747c1a17e6b07da63753e8',
+  'angle_revision': '6969132c134fac34b509438ac031d879f43cdc54',
   # 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.