Roll src/third_party/glslang/src dbb56a1d4859..e2176c91b23c (1 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang/+log/dbb56a1d4859..e2176c91b23c

git log dbb56a1d4859..e2176c91b23c --date=short --first-parent --format='%ad %ae %s'
2020-03-11 johnkslang@users.noreply.github.com Merge pull request #2110 from jeffbolznv/escapeseq

Created with:
  gclient setdep -r src/third_party/glslang/src@e2176c91b23c

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
Please CC radial-bots+chrome-roll@google.com,jmadill@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: radial-bots+chrome-roll@google.com,jmadill@google.com
Change-Id: I0535e53ac300e459f9539e6fcf9a43aaf2409e41
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2097719Reviewed-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@{#749070}

DEPS

@@ -955,7 +955,7 @@ deps = {
     Var('chromium_git') + '/codecs/libgav1.git' + '@' + 'fa1c3c4e673cf12ffa22b8fbe4a7c79314571f1b',
 
   'src/third_party/glslang/src':
-    Var('chromium_git') + '/external/github.com/KhronosGroup/glslang.git' + '@' + 'dbb56a1d48592d24afb89550a47bda0a9bf14df3',
+    Var('chromium_git') + '/external/github.com/KhronosGroup/glslang.git' + '@' + 'e2176c91b23c620f3e0bc388869612c26f87c840',
 
   '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'),