Update DevTools DEPS (trusted)

Rolling build: https://chromium.googlesource.com/chromium/src/build/+log/0cecdf8..74f6e21

Roll created at https://cr-buildbucket.appspot.com/build/8723593865988768001

Bug: none
Change-Id: Id4d54eb472ef9d0e3569e2531db7c9523f0e5611
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6241905
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

@@ -12,7 +12,7 @@ vars = {
   'build_with_chromium': False,
 
   'build_url': 'https://chromium.googlesource.com/chromium/src/build.git',
-  'build_revision': '0cecdf805209ca84b85ec9f9c68e4da8c5e0e36b',
+  'build_revision': '74f6e21c55b0f63b730422e889d7b616002e3f69',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
   'buildtools_revision': 'fa96185dc5d13c6666b4850d03cddc06be4e4f35',