Update DevTools DEPS (trusted)

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/d49a21c..858ffc1

Roll created at https://cr-buildbucket.appspot.com/build/8722903064789678289

Bug: none
Change-Id: I092ab8941692f920b34626ae7430f0fda8fad4f2
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6272576
Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Author: devtools-ci-autoroll-builder

DEPS

@@ -18,7 +18,7 @@ vars = {
   'buildtools_revision': '9bdc0a08157f9a3bb36a176ede3298d09bf33d36',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': 'd49a21c533dc5182efd1b5ba9627bdcdd107993b',
+  'depot_tools_revision': '858ffc1da7580703ac0b3fce45a7fc21273d3001',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '940abfc668be2591483f7132145593c6a047f3cf',