Update DevTools DEPS (trusted)

Rolling build: https://chromium.googlesource.com/chromium/src/build/+log/1c86302..6f78132

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/3e50274..29ba1da

Roll created at https://cr-buildbucket.appspot.com/build/8733684104513992225

Bug: none
Change-Id: I2d3707b97f270409c5499a19ff618cf0514793e6
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5943205
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

@@ -12,10 +12,10 @@ vars = {
   'build_with_chromium': False,
 
   'build_url': 'https://chromium.googlesource.com/chromium/src/build.git',
-  'build_revision': '1c86302b48c5d328c1971aee9731d021544264bf',
+  'build_revision': '6f78132b7587bc8532006c2f233aaf0a1a5818c3',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': '3e502749c2310aa566abf8a41f8834951021d742',
+  'buildtools_revision': '29ba1da28dcbaf1a5caea89285bb3544ecc3bd43',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
   'depot_tools_revision': 'c4d75a151973a872ec74e33afb90acde64c48644',