This reverts commit c36c8e114df8f21ec286adf1ffe76cf5fc495f53. Reason for revert: Breaks downstream code. Original change's description: > Makes send side network estimation opt-in. > > Bug: webrtc:10742 > Change-Id: I57159a3bf853ef8de32f5ba70ad4fa897ee5c528 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144046 > Reviewed-by: Björn Terelius <terelius@webrtc.org> > Commit-Queue: Sebastian Jansson <srte@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#28631} TBR=terelius@webrtc.org,srte@webrtc.org Change-Id: Ie9ce099d9154551fd123dbc1eca96ca2730fbc9f No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: webrtc:10742 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/146544 Reviewed-by: Sebastian Jansson <srte@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28634}