Roll Depot Tools from c08c71bedfbb to 7d98e228f836 (2 revisions)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/c08c71bedfbb..7d98e228f836

2020-08-27 glenrob@chromium.org Allow 'main' as a local main branch name.
2020-08-27 sweilun@chromium.org Also Pretty print the split histogram_suffixes_list

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 ajp@google.com,apolito@google.com,ehmaldonado@google.com,sokcevic@google.com 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/+doc/master/autoroll/README.md

Bug: chromium:1121852
Tbr: ajp@google.com,apolito@google.com,ehmaldonado@google.com,sokcevic@google.com
Change-Id: Ifb50a0b64aa1c8594a4ad9755baed24ec08fae4d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2380530Reviewed-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@{#802355}

DEPS

@@ -896,7 +896,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'c08c71bedfbb76a839518633ce2ea92feaf36163',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '7d98e228f836926d223183bb3b95588b31782f9a',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),