Roll src/third_party/depot_tools 780e6bf8d438..1e247059f49b (3 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/780e6bf8d438..1e247059f49b

git log 780e6bf8d438..1e247059f49b --date=short --first-parent --format='%ad %ae %s'
2020-02-28 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-02-28 ehmaldonado@chromium.org Revert "Print content of description backup on exit"
2020-02-28 ehmaldonado@google.com my_activity.py: Run using vpython3 by default.

Created with:
  gclient setdep -r src/third_party/depot_tools@1e247059f49b

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:1056193
Tbr: agable@chromium.org
Change-Id: Ic25a917e52cffdecf850f43b60f75d0874e58e94
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2079865Reviewed-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@{#745355}

DEPS

@@ -879,7 +879,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '780e6bf8d43870389e6eba66611c7f25c8e0f6f3',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '1e247059f49b0aae00a650c6714719dd091dd77c',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),