Roll src/third_party/depot_tools 352808fa158d..b7a7f1c05edb (4 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/352808fa158d..b7a7f1c05edb

git log 352808fa158d..b7a7f1c05edb --date=short --no-merges --format='%ad %ae %s'
2019-10-08 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-10-08 ehmaldonado@chromium.org Revert "git-cl: Set legacy properties."
2019-10-08 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-10-08 ehmaldonado@chromium.org git-cl: Run using vpython

Created with:
  gclient setdep -r src/third_party/depot_tools@b7a7f1c05edb

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:1004447,chromium:1002153
Change-Id: Ie576ec800f7d8a7e94ac03a642aadb17653d8f6a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1847936Reviewed-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@{#703932}

DEPS

@@ -887,7 +887,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '352808fa158d6d67645423bc101d3eb3b181a5c5',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'b7a7f1c05edbe213fcd92f08b203c796d46d8912',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),