It should fix compilation errors that happen on some iOS bots saying "definition of implicit copy assignment operator for 'Foo' is deprecated because it has a user-declared copy constructor" Bug: webrtc:11162 Change-Id: Ife3d1a800ed6a4cd08bdfd156cd0e320504ee8dd Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/161221 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29984}