Roll WebGL 91b544d..1a111c2

https://chromium.googlesource.com/external/khronosgroup/webgl.git/+log/91b544d..1a111c2

TBR=kbr@chromium.org

Bug: 1135785, angleproject:5038
Cq-Include-Trybots: luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-angle-rel;luci.chromium.try:win-angle-rel-32;luci.chromium.try:win-angle-rel-64
Change-Id: I618c5db369e68f8088a215f0a9b74f1e82b09636
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2455029Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>
Cr-Commit-Position: refs/heads/master@{#814549}

DEPS

@@ -1470,7 +1470,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/SeleniumHQ/selenium/py.git' + '@' + 'd0045ec570c1a77612db35d1e92f05e1d27b4d53',
 
   'src/third_party/webgl/src':
-    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '91b544de5344c42a776661d262712833ac5d7f4b',
+    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '1a111c2adcb4898655aacaca018d6e275172760b',
 
   'src/third_party/webgpu-cts/src':
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + 'a60596ec57527c989f1beaa37fc4bf1aa22bf084',

content/test/gpu/gpu_tests/test_expectations/webgl_conformance_expectations.txt

@@ -131,6 +131,9 @@ crbug.com/1082533 [ mac intel ] conformance/textures/misc/texture-copying-and-de
 crbug.com/1018028 [ win vulkan nvidia ] conformance/rendering/bind-framebuffer-flush-bug.html [ Failure ]
 crbug.com/1110111 [ win nvidia ] conformance/rendering/point-no-attributes.html [ RetryOnFailure ]
 
+# Skipping new tests
+crbug.com/angleproject/5038 conformance/extensions/ext-color-buffer-half-float.html [ Skip ]
+
 # Need to implement new error semantics
 # https://github.com/KhronosGroup/WebGL/pull/2607
 crbug.com/849572 [ win d3d11 passthrough ] conformance/extensions/angle-instanced-arrays-out-of-bounds.html [ Failure ]

content/test/gpu/gpu_tests/webgl_conformance_revision.txt

 # AUTOGENERATED FILE - DO NOT EDIT
 # SEE roll_webgl_conformance.py
-Current webgl revision 91b544de5344c42a776661d262712833ac5d7f4b
+Current webgl revision 1a111c2adcb4898655aacaca018d6e275172760b