Roll src/third_party/depot_tools 0aa48cc1dec7..1248b8ef4a7b (1 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/0aa48cc1dec7..1248b8ef4a7b

git log 0aa48cc1dec7..1248b8ef4a7b --date=short --first-parent --format='%ad %ae %s'
2020-01-27 pkasting@chromium.org Fix a python invocation that wasn't replaced with vpython.

Created with:
  gclient setdep -r src/third_party/depot_tools@1248b8ef4a7b

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: None
Tbr: agable@chromium.org
Change-Id: Ice80ffc245f2646e4e6b3971b6515bb2072f9608
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2023207Reviewed-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@{#735517}

DEPS

@@ -904,7 +904,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '0aa48cc1dec795055e1acddb6b95ada385f1dee1',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '1248b8ef4a7b3747c9f8aaa5a077316d34ae7435',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),