Roll src/third_party/angle 799e075abeea..639bc9086732 (4 commits)

https://chromium.googlesource.com/angle/angle.git/+log/799e075abeea..639bc9086732


git log 799e075abeea..639bc9086732 --date=short --no-merges --format='%ad %ae %s'
2018-07-18 jmadill@chromium.org Vulkan: Pass Renderer to FramebufferVk init.
2018-07-18 tobine@google.com Roll Vulkan repos fwd as of 7/17
2018-07-18 jmadill@chromium.org Vulkan: Fix size_t warning in TextureVk.
2018-07-18 geofflang@chromium.org Vulkan: Support multiple depth stencil formats for backbuffers.


Created with:
  gclient setdep -r src/third_party/angle@639bc9086732

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=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
TBR=cwallez@chromium.org

Change-Id: I6dd778f3ba650958f38fcb93e1ba7674309fcf01
Reviewed-on: https://chromium-review.googlesource.com/1142265Reviewed-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@{#576259}

DEPS

@@ -117,7 +117,7 @@ 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': '799e075abeead787505b3ddac9f7c6b32404bc16',
+  'angle_revision': '639bc90867325cfcc95b9365c66b6128fcd1b654',
   # 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.