Roll glslang from 27e915ed4f20 to dca47063ccd2 (2 revisions)

27e915ed4f..dca47063cc

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/glslang-angle-autoroll
Please CC ianelliott@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/+doc/master/autoroll/README.md

Bug: None
Tbr: ianelliott@google.com
Change-Id: I86e12ab8e9ef5220362635b5f078cdffe02a2850
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2274689
Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -25,7 +25,7 @@ vars = {
   'vk_gl_cts_revision': '2e189d3854dbba9ce51c4ec87c7c099e562d714c',
 
   # Current revision of glslang, the Khronos SPIRV compiler.
-  'glslang_revision': '27e915ed4f208cf0913425c79b1e62ffe80a6299',
+  'glslang_revision': 'dca47063ccd29e5cea8e88dc38a6369d4c2e5c11',
 
   # Current revision of googletest.
   # Note: this dep cannot be auto-rolled b/c of nesting.