Roll src/third_party/depot_tools 552ddbf3bfe0..96c9784d1a3d (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/552ddbf3bfe0..96c9784d1a3d

git log 552ddbf3bfe0..96c9784d1a3d --date=short --first-parent --format='%ad %ae %s'
2020-03-11 tandrii@google.com Fix OWNERS: full regexps not allowed, it's matched by fnmatch.
2020-03-11 ehmaldonado@google.com subprocess2: Fix CalledProcessError str() method on Python 3.

Created with:
  gclient setdep -r src/third_party/depot_tools@96c9784d1a3d

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:1060018,chromium:1060409
Tbr: agable@chromium.org
Change-Id: Icc5cd4c8d5c6bb517ef7af78ccf4b173815afb2d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2097717Reviewed-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@{#749071}

DEPS

@@ -899,7 +899,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '552ddbf3bfe04c7daa75e04d17263b4cd348999b',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '96c9784d1a3d4406b02d886f2fdbab7fd25efe73',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),