For unique_ptrs assigned at construction time, declare them const, and
use RTC_PT_GUARDED_BY rather than RTC_GUARDED_BY.
Bug: None
Change-Id: I8aa83e062a1550780ee07792c1fbb195267d5524
Reviewed-on: https://webrtc-review.googlesource.com/12923
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20348}