Roll WebGL 7c4e67f..2701c13

https://chromium.googlesource.com/external/khronosgroup/webgl.git/+log/7c4e67f..2701c13

TBR=kbr@chromium.org

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: I95e43f8b4e0cce63efd944255649c8fd433c291e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1849103Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>
Cr-Commit-Position: refs/heads/master@{#704310}

DEPS

@@ -1467,7 +1467,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/SeleniumHQ/selenium/py.git' + '@' + 'd0045ec570c1a77612db35d1e92f05e1d27b4d53',
 
   'src/third_party/webgl/src':
-    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '7c4e67ff117d6c640e6dd17989afe2fb7da7eecb',
+    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '2701c130839edbeb226735b0775966b6423d9e83',
 
   'src/third_party/webrtc':
     Var('webrtc_git') + '/src.git' + '@' + '5963c7cf0a70e1abdf0e3f313c10cb8a161f6cdb',

content/test/gpu/gpu_tests/webgl_conformance_revision.txt

 # AUTOGENERATED FILE - DO NOT EDIT
 # SEE roll_webgl_conformance.py
-Current webgl revision 7c4e67ff117d6c640e6dd17989afe2fb7da7eecb
+Current webgl revision 2701c130839edbeb226735b0775966b6423d9e83