Roll src/third_party/depot_tools cb1eb4896663..71681bf1e84a (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/cb1eb4896663..71681bf1e84a

git log cb1eb4896663..71681bf1e84a --date=short --no-merges --format='%ad %ae %s'
2019-10-09 ehmaldonado@chromium.org git-common: Explicitly specify utf-8 when encoding.
2019-10-09 tandrii@google.com git cl: record additional tag for builds triggered via retry-failed.

Created with:
  gclient setdep -r src/third_party/depot_tools@71681bf1e84a

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:1012773,chromium:445502
Change-Id: Idb99126e85be36c35ccd468ea5a0824a049baebc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1850927Reviewed-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@{#704447}

DEPS

@@ -887,7 +887,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'cb1eb489666392bf18938b88815659f8669aeec6',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '71681bf1e84a4829521cb8a33b7c3331d46580b8',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),