Roll src/third_party/depot_tools 02b5af35755b..6d31ed5d639e (1 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/02b5af35755b..6d31ed5d639e

git log 02b5af35755b..6d31ed5d639e --date=short --first-parent --format='%ad %ae %s'
2019-12-02 ehmaldonado@google.com cpplint: Fix Python 3 errors.

Created with:
  gclient setdep -r src/third_party/depot_tools@6d31ed5d639e

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:1027160
Tbr: agable@chromium.org
Change-Id: I5b78c8a634cb0b15fb8026298f5fc7cfa1658510
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1947303Reviewed-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@{#720750}

DEPS

@@ -887,7 +887,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '02b5af35755b90057b87f48afe9d7faa1de5d97f',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '6d31ed5d639e0bead9080b6543f8c1e6b69b0221',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),