Roll src/third_party/glslang/src fd593d5f0834..46572440189e (1 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang/+log/fd593d5f0834..46572440189e

git log fd593d5f0834..46572440189e --date=short --first-parent --format='%ad %ae %s'
2020-04-13 cepheus@frii.com Fix #2178: Allow specialization constants for texel offsets.

Created with:
  gclient setdep -r src/third_party/glslang/src@46572440189e

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/glslang-chromium-autoroll
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is aware of the problem.

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https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Cq-Include-Trybots: luci.chromium.try:android_angle_vk32_deqp_rel_ng;luci.chromium.try:android_angle_vk32_rel_ng;luci.chromium.try:android_angle_vk64_deqp_rel_ng;luci.chromium.try:android_angle_vk64_rel_ng;luci.chromium.try:linux_angle_deqp_rel_ng;luci.chromium.try:linux-angle-rel;luci.chromium.try:win-angle-rel-32;luci.chromium.try:win-angle-rel-64;luci.chromium.try:win-angle-deqp-rel-32;luci.chromium.try:win-angle-deqp-rel-64
Bug: None
Tbr: radial-bots+chrome-roll@google.com,jonahr@google.com
Change-Id: I90292aabd43fc7e7db8c61611010c82c1d0b1de8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2146857Reviewed-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@{#758468}

DEPS

@@ -937,7 +937,7 @@ deps = {
     Var('chromium_git') + '/codecs/libgav1.git' + '@' + '638ef84819f8b3cd614dcf63378fe4814aa4cb2a',
 
   'src/third_party/glslang/src':
-    Var('chromium_git') + '/external/github.com/KhronosGroup/glslang.git' + '@' + 'fd593d5f08343b44302c3a018a8bb734f550be9e',
+    Var('chromium_git') + '/external/github.com/KhronosGroup/glslang.git' + '@' + '46572440189ead394654b0d06d5d689012ebdd00',
 
   'src/third_party/google_toolbox_for_mac/src': {
       'url': Var('chromium_git') + '/external/github.com/google/google-toolbox-for-mac.git' + '@' + Var('google_toolbox_for_mac_revision'),