Roll Depot Tools from 70828422634e to 4640dfbfd719 (1 revision)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/70828422634e..4640dfbfd719

2020-12-03 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: I7cefb41328fcfba92b0dd4be421d547a5ab52432
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2570507Reviewed-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@{#833112}

DEPS

@@ -919,7 +919,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '70828422634e0464ca00013bf422be0d01c426b9',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '4640dfbfd71908a1e74bf77b0a0ad2fa106114bc',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),