Roll src/third_party/depot_tools 3ddc523561cf..4a60db4c3e62 (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/3ddc523561cf..4a60db4c3e62

git log 3ddc523561cf..4a60db4c3e62 --date=short --no-merges --format='%ad %ae %s'
2019-09-16 bratell@opera.com Correct an error message where branch and url had changed places
2019-09-16 tandrii@chromium.org cipd: update to 2a121dde.

Created with:
  gclient setdep -r src/third_party/depot_tools@4a60db4c3e62

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 agable@chromium.org 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/+/master/autoroll/README.md

TBR=agable@chromium.org

Bug: chromium:1003774
Change-Id: I221bc028c5c84158e1cb7a843582457187f950c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1807594Reviewed-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@{#696933}

DEPS

@@ -878,7 +878,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '3ddc523561cf9043318e5a7d8ae08ee5f901436e',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '4a60db4c3e62239e471dc69906353fcf0384920a',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),