[automerger skipped] Merge "Visualizer: Ensure multi-thread safety" into rvc-dev am: 6332f778 -s ours
am skip reason: Change-Id I50752fad02f2a23ed8d0368b2550dbf7f879a706 with SHA-1 7dcb80ce is in history
Change-Id: If23ac9373e88126e5939ef6ee10546d50d599564