Roll src/third_party/angle 5552cdf032dd..4f2b94cb9a6b (3 commits)

https://chromium.googlesource.com/angle/angle.git/+log/5552cdf032dd..4f2b94cb9a6b


git log 5552cdf032dd..4f2b94cb9a6b --date=short --no-merges --format='%ad %ae %s'
2018-11-27 geofflang@chromium.org Expose EXT_color_buffer_half_float if RGBA16F is renderable.
2018-11-27 jiajia.qin@intel.com ES31: Add swizzle support in SSBO (Part 1)
2018-11-27 jdarpinian@chromium.org WebGL, D3D: Forbid multiple TF outputs in one buffer


Created with:
  gclient setdep -r src/third_party/angle@4f2b94cb9a6b

The AutoRoll server is located here: https://autoroll.skia.org/r/angle-chromium-autoroll

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=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel

BUG=chromium:866089
TBR=fjhenigman@chromium.org

Change-Id: I2f9f64d4e1a188df1612ecfb8c66b6129dc5a202
Reviewed-on: https://chromium-review.googlesource.com/c/1352244Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#611325}

DEPS

@@ -124,7 +124,7 @@ 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': '5552cdf032dd81697de38683293a0a93752e16c7',
+  'angle_revision': '4f2b94cb9a6bb640110ea65a7637872b83acbba8',
   # 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.