Roll src/third_party/depot_tools 0e60ecd30efa..a0b8c5dcf189 (1 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/0e60ecd30efa..a0b8c5dcf189

git log 0e60ecd30efa..a0b8c5dcf189 --date=short --first-parent --format='%ad %ae %s'
2019-12-04 danakj@chromium.org Don't fetch tags in presubmit

Created with:
  gclient setdep -r src/third_party/depot_tools@a0b8c5dcf189

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

Bug: chromium:1019824
Tbr: agable@chromium.org
Change-Id: I53e871e8ef4a4e49b3d3d305c9569aa3dea66cfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1951408Reviewed-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@{#721757}

DEPS

@@ -891,7 +891,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '0e60ecd30efa9a469b4bcc93006c253861a26164',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'a0b8c5dcf1890916119ed180ab936948ec62cba1',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),