Allows assuming that the buffer is not accessed after the call returns. Bug: b/72675429 No-Try: True Change-Id: Iff4a05433c6eed6aefec49ce67486966b1ed882f Reviewed-on: https://webrtc-review.googlesource.com/49161 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21940}