Roll src/third_party/angle/ 6df487ef1..47c8ea3fb (1 commit)

https://chromium.googlesource.com/angle/angle.git/+log/6df487ef1e61..47c8ea3fb265

$ git log 6df487ef1..47c8ea3fb --date=short --no-merges --format='%ad %ae %s'
2018-01-03 jmadill Vulkan: Fix looped clears.

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: Iaecbc475ea866e2d8db42fd28ae79b9be48dfcb3
Reviewed-on: https://chromium-review.googlesource.com/849703
Commit-Queue: angle-deps-roller . <angle-deps-roller@chromium.org>
Reviewed-by: angle-deps-roller . <angle-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#526918}

DEPS

@@ -90,7 +90,7 @@ 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': '6df487ef1e6164bbe3fd05d74396edcf0001d25c',
+  'angle_revision': '47c8ea3fb265682b6dd040bf04488747f0292da1',
   # 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.