| diff --git components/metrics/persistent_system_profile.cc components/metrics/persistent_system_profile.cc |
| index 83c0308a977a0..9859e33d3ce7e 100644 |
| --- components/metrics/persistent_system_profile.cc |
| +++ components/metrics/persistent_system_profile.cc |
| @@ -392,6 +392,10 @@ bool PersistentSystemProfile::GetSystemProfile( |
| +void PersistentSystemProfile::DetachFromCurrentThread() { |
| + DETACH_FROM_THREAD(thread_checker_); |
| void PersistentSystemProfile::MergeUpdateRecords( |
| const base::PersistentMemoryAllocator& memory_allocator, |
| diff --git components/metrics/persistent_system_profile.h components/metrics/persistent_system_profile.h |
| index fc173051fb8c1..3fcc43880e89d 100644 |
| --- components/metrics/persistent_system_profile.h |
| +++ components/metrics/persistent_system_profile.h |
| @@ -64,6 +64,10 @@ class PersistentSystemProfile { |
| const base::PersistentMemoryAllocator& memory_allocator, |
| SystemProfileProto* system_profile); |
| + // Detaches this object from the current thread in preparation for a move to |
| + void DetachFromCurrentThread(); |
| friend class PersistentSystemProfileTest; |