Update DevTools DEPS (trusted)

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/f312f0f..ba1ffdb

Roll created at https://cr-buildbucket.appspot.com/build/8729063659736192577

Bug: none
Change-Id: I84839d76304e8f4a34efdbf34ad544d29f867284
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6075514
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Author: devtools-ci-autoroll-builder

DEPS

@@ -15,7 +15,7 @@ vars = {
   'build_revision': '0fd2761da2a7e9349e862405555f28662ae01154',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': 'f312f0fbb3030c07a57524691e03aa1cd14f3d02',
+  'buildtools_revision': 'ba1ffdb8594e10776090bdeab00385763d4aff51',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
   'depot_tools_revision': 'ba733f35cde8ae85e7ca85956cdc63b297dc9425',