Roll src/third_party/angle ecaebd0fc645..524a8c9049f3 (3 commits)

https://chromium.googlesource.com/angle/angle.git/+log/ecaebd0fc645..524a8c9049f3


git log ecaebd0fc645..524a8c9049f3 --date=short --no-merges --format='%ad %ae %s'
2019-07-04 jmadill@chromium.org Fix header check for GLES 1.0 conformance tests.
2019-07-04 jonahr@google.com Add missing functions to libEGL.def
2019-07-04 geofflang@chromium.org Make egl::Sync a LabeledObject.


Created with:
  gclient setdep -r src/third_party/angle@524a8c9049f3

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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=ynovikov@google.com

Change-Id: Iccd96286d832d068e10e1daa62983aaad9311cb1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1689209
Reviewed-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@{#674904}