Roll src/third_party/angle/ df9ad2be8..9a608c0e1 (1 commit)

https://chromium.googlesource.com/angle/angle.git/+log/df9ad2be8c97..9a608c0e1f8c

$ git log df9ad2be8..9a608c0e1 --date=short --no-merges --format='%ad %ae %s'
2018-02-02 ynovikov Vulkan: request coherent memory for StagingImage

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: I39129b1d10f5de0e0eebf73cb8a8ea0c9bafde25
Reviewed-on: https://chromium-review.googlesource.com/900422
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@{#534250}

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': 'df9ad2be8c9766e867c46eb3b5d1fd24235f5b67',
+  'angle_revision': '9a608c0e1f8ce0cca282e8a3bd684abbbda9e726',
   # 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.