Roll Depot Tools from ac96016abc40 to 6128ceacf001 (1 revision)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/ac96016abc40..6128ceacf001

2021-01-06 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/depot-tools-chromium-autoroll
Please CC ajp@google.com,apolito@google.com,ehmaldonado@google.com,sokcevic@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: ajp@google.com,apolito@google.com,ehmaldonado@google.com,sokcevic@google.com
Change-Id: Ib4c80a9d1ecd05071f4060f084faf16fa1fbb7b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612410Reviewed-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@{#840472}

DEPS

@@ -893,7 +893,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'ac96016abc4038e297884b7e37bfd4d1187e30ef',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '6128ceacf0011786c1c3f0875911305fc5bdd086',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),