[automerger skipped] Merge "Visualizer: Ensure multi-thread safety" into rvc-dev am: 6332f7786c am: a2b2f3f396 -s ours

am skip reason: Change-Id I50752fad02f2a23ed8d0368b2550dbf7f879a706 with SHA-1 f8213b3aee is in history

Change-Id: Ibbdfadcf08b08b13fe86b1143889365eb76f8d30