This reverts commit c33f1a828c31412e7422e7bf11db7c9b61fab339. Reason for revert: Breaks downstream project. Original change's description: > Make the test library for field trials testonly. > > Bug: None > Change-Id: I703a82e0ca10908bdc56c0d4f1455e042ce74ac1 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267163 > Reviewed-by: Artem Titov <titovartem@webrtc.org> > Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#37371} Bug: None Change-Id: I1d6d88ed9f32d5f1aab3159bbd1f279f164a079d No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267164 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com> Owners-Override: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37372}