Roll src/third_party/angle/ 13fd988cf..bd6ae4aa1 (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/13fd988cf71d..bd6ae4aa145d

$ git log 13fd988cf..bd6ae4aa1 --date=short --no-merges --format='%ad %ae %s'
2018-01-29 geofflang Vulkan: Don't create zero-sized textures.
2018-01-29 geofflang Vulkan: Allow dEQP to create Vulkan displays.

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: Id9edf6124da72fb34024573b59d68f20311f7d54
Reviewed-on: https://chromium-review.googlesource.com/894266Reviewed-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@{#533055}

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': '13fd988cf71dc0ec092354e8e98e1b7b4c31ba90',
+  'angle_revision': 'bd6ae4aa145daea5869a2c86bb962d37a71bd264',
   # 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.