tree d880dfdaf8b26b6da6d20f0a26afc58150ad3469
parent 3ba809d6a6bc20931adde485bb04586a6556db11
author Daniel Collins <dpcollins@google.com> 1702581253 -0500
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> 1702588138 +0000

Change CallbackDeferrer to pre-reserve the deferred vector.

The push_back pattern results in frequent vector growth which has performance overhead. This is .5% of our server's CPU

Bug: webrtc:15723
Change-Id: Ic151c81a4b49a7d48a354b75f62694bc6f9a1ee4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/331440
Reviewed-by: Victor Boivie <boivie@webrtc.org>
Commit-Queue: Daniel Collins <dpcollins@google.com>
Cr-Commit-Position: refs/heads/main@{#41388}