Roll third_party/tint/ f6ac1c3df..5914f7421 (1 commit)

https://dawn.googlesource.com/tint/+log/f6ac1c3dfad6..5914f7421c99

$ git log f6ac1c3df..5914f7421 --date=short --no-merges --format='%ad %ae %s'
2021-09-16 amaiorano spirv backend: do not generate a load for ignored expressions

Created with:
  roll-dep third_party/tint

Change-Id: I7718cf6591d982b3be94836dfe81cc78727dcfbc
No-Try: true
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/64462
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/DEPS b/DEPS
index 8c11fb3..8a20a3c 100644
--- a/DEPS
+++ b/DEPS
@@ -96,7 +96,7 @@
 
   # WGSL support
   'third_party/tint': {
-    'url': '{dawn_git}/tint@f6ac1c3dfad618cfd518dfa0e208e8c1fbbc903b',
+    'url': '{dawn_git}/tint@5914f7421c999c77ab780e6d6e22678a4cc89e7c',
   },
 
   # GLFW for tests and samples