Roll third_party/spirv-tools/ c3adcb034..ba4b390c3 (1 commit)

c3adcb034f..ba4b390c36

$ git log c3adcb034..ba4b390c3 --date=short --no-merges --format='%ad %ae %s'
2021-09-28 afdx Suppress protobuf warning (#4551)

Created with:
  roll-dep third_party/spirv-tools

Change-Id: I18d47adbb1f076514917ce188cf127de9c2961b4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/65440
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>

DEPS

@@ -13,7 +13,7 @@ vars = {
   'gpuweb_cts_revision': 'b0291fd966b55a5efc496772555b94842bde1085',
   'protobuf_revision': 'fde7cf7358ec7cd69e8db9be4f1fa6a5c431386a',
   'spirv_headers_revision': 'ae217c17809fadb232ec94b29304b4afcd417bb4',
-  'spirv_tools_revision': 'c3adcb034fe4dcf77749ea6db2ad0ba91a6fc01a',
+  'spirv_tools_revision': 'ba4b390c367e09edaad36f0376a87aa03620fd4b',
   'testing_revision': '2691851e49de541c3fe42fa8692ddcdee938162f',
 }