Fix ScopedBlockingCall DCHECK when analyzing DMG files. opens dmg on the UI thread which disallows blocking leading
to a DCHECK failure on debug builds.


1. Open chromium (debug)
2. Navigate to
3. No crash

Bug: 921148
Change-Id: Idb3a06d747a61ed5f92c5f3be92d791877dcd3c7
Reviewed-by: Ken Rockot <>
Reviewed-by: Varun Khaneja <>
Reviewed-by: Robert Sesek <>
Commit-Queue: Varun Khaneja <>
Cr-Commit-Position: refs/heads/master@{#623804}
5 files changed