Roll src/third_party/depot_tools 6bb29da82994..979fa780ce2f (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/6bb29da82994..979fa780ce2f

git log 6bb29da82994..979fa780ce2f --date=short --no-merges --format='%ad %ae %s'
2019-08-13 ehmaldonado@chromium.org depot_tools: Make gclient_scm Python 3 compatible.
2019-08-13 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
  gclient setdep -r src/third_party/depot_tools@979fa780ce2f

The AutoRoll server is located here: https://autoroll.skia.org/r/depot-tools-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=agable@chromium.org

Bug: chromium:984182
Change-Id: I2373657fba8cb586e78c4e389a90f128601cd6b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1753084Reviewed-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@{#686657}

DEPS

@@ -839,7 +839,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '6bb29da82994c6e57ec3f5687e263affa11e6fd4',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '979fa780ce2f41fe9a3d89d74d9e8e69f88cd71d',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),