prefs: if os == "mac": [dom.webgpu.enabled:true, dom.webgpu.service-workers.enabled:true, dom.webgpu.testing.assert-hardware-adapter:true] if os == "win": [dom.webgpu.enabled:true, dom.webgpu.service-workers.enabled:true, dom.webgpu.testing.assert-hardware-adapter:true] [dom.webgpu.enabled:true, dom.webgpu.service-workers.enabled:true] lsan-allowed: [Alloc, mozilla::net::nsServerSocket::CreateClientTransport] leak-threshold: [default:51200]