Roll src/third_party/depot_tools 1e4d70d1dd08..ca8793223ace (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/1e4d70d1dd08..ca8793223ace

git log 1e4d70d1dd08..ca8793223ace --date=short --no-merges --format='%ad %ae %s'
2019-09-09 ehmaldonado@chromium.org gclient: Fix gclient Python 3 errors and add to presubmit tests.
2019-09-09 ehmaldonado@chromium.org git-cl: Remove unused auth configs.

Created with:
  gclient setdep -r src/third_party/depot_tools@ca8793223ace

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:984182,chromium:1001756
Change-Id: I756c6becdb2544f2df86d8a85f6c2a8498f26e44
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1792238Reviewed-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@{#694955}

DEPS

@@ -867,7 +867,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '1e4d70d1dd0865b0ac824beccee70d3852705dd8',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'ca8793223ace1d9099f1b2015a02ddb645475752',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),