Roll src/third_party/depot_tools 56c9bd5a7359..d55c50771361 (1 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/56c9bd5a7359..d55c50771361

git log 56c9bd5a7359..d55c50771361 --date=short --first-parent --format='%ad %ae %s'
2020-02-20 ehmaldonado@google.com git-cl: Mock DieWithError and GitSanityTests

Created with:
  gclient setdep -r src/third_party/depot_tools@d55c50771361

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:1051631
Tbr: agable@chromium.org
Change-Id: Ibdf922f03053b7a48aca759b902eee8ad16a0bde
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2065890Reviewed-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@{#742942}

DEPS

@@ -886,7 +886,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '56c9bd5a73595d6ee86bf53dcb995e97f0fe6366',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'd55c50771361fa0295d9e14b6ab061db042c7772',
 
   'src/third_party/devtools-frontend/src':
     Var('chromium_git') + '/devtools/devtools-frontend' + '@' + Var('devtools_frontend_revision'),