Update DevTools DEPS (trusted)

Rolling build: https://chromium.googlesource.com/chromium/src/build/+log/3278a64..968e3bc

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/5d51670..37dac5f

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/8c6304b..e9ca443

Roll created at https://cr-buildbucket.appspot.com/build/8701431585276410273

Bug: none
Change-Id: Ib3bedc1c943b29f5af6233e8428ec680f53da1ee
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7029760
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

@@ -12,13 +12,13 @@ vars = {
   'build_with_chromium': False,
 
   'build_url': 'https://chromium.googlesource.com/chromium/src/build.git',
-  'build_revision': '3278a64e265aaf534da4b62592cdc1311f71772b',
+  'build_revision': '968e3bccad5013be7f52d8c60d2d3cb9971ff151',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': '5d51670fa6bcaa6dec8c9f6862bdc92cb0c95393',
+  'buildtools_revision': '37dac5f9344abd56c27917255c27ed7e727bc845',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': '8c6304befd2205384c73e73d214848e57d9a0239',
+  'depot_tools_revision': 'e9ca443a0f5b28ca00d6a1d89e0f1155a774a657',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '679b33a98ae546ff521eee2ea28d8d5bf28872ba',