Chrome OS:10452.27.0/ 66.0.3359.52

Steps:
Seen browser crash while pressing Search key.

crash report: https://crash.corp.google.com/browse?stbtiq=5c0b180ee546d4b7

Thread 0 (id: 22133) CRASHED [SIGTRAP @ 0x00000000 ] MAGIC SIGNATURE THREAD
Stack Quality100%Show frame trust levels
0x00005ce72b593d37	(chrome -ordinal.h:304 )	ChromeAppListModelUpdater::UpdateAppItemFromSyncItem(app_list::AppListSyncableService::SyncItem*, bool, bool)
0x00005ce72b58eedd	(chrome -app_list_syncable_service.cc:567 )	app_list::AppListSyncableService::ModelUpdaterDelegate::OnAppListItemAdded(ChromeAppListItem*)
0x00005ce72b593e18	(chrome -chrome_app_list_model_updater.cc:481 )	ChromeAppListModelUpdater::OnFolderCreated(mojo::StructPtr<ash::mojom::AppListItemMetadata>)
0x00005ce72b584290	(chrome -app_list_client_impl.cc:110 )	<name omitted>
0x00005ce72773af12	(chrome -app_list.mojom.cc:4136 )	ash::mojom::AppListClientStubDispatch::Accept(ash::mojom::AppListClient*, mojo::Message*)
0x00005ce728c53fbc	(chrome -interface_endpoint_client.cc:419 )	mojo::InterfaceEndpointClient::HandleValidatedMessage(mojo::Message*)
0x00005ce728c59719	(chrome -interface_endpoint_client.cc:306 )	mojo::internal::MultiplexRouter::ProcessIncomingMessage(mojo::internal::MultiplexRouter::MessageWrapper*, mojo::internal::MultiplexRouter::ClientCallBehavior, base::SequencedTaskRunner*)
0x00005ce72621f5fd	(chrome -multiplex_router.cc:604 )	mojo::internal::MultiplexRouter::Accept(mojo::Message*)
0x00005ce72621f0e3	(chrome -connector.cc:443 )	mojo::Connector::ReadSingleMessage(unsigned int*)
0x00005ce72621f467	(chrome -connector.cc:472 )	mojo::Connector::ReadAllAvailableMessages()
0x00005ce728c65f31	(chrome -callback.h:124 )	mojo::SimpleWatcher::OnHandleReady(int, unsigned int, mojo::HandleSignalsState const&)
0x00005ce726211c08	(chrome -callback.h:95 )	base::MessageLoop::RunTask(base::PendingTask*)
0x00005ce726213a04	(chrome -message_loop.cc:403 )	base::MessagePumpLibevent::Run(base::MessagePump::Delegate*)
0x00005ce7287ceb3f	(chrome -run_loop.cc:130 )	ChromeBrowserMainParts::MainMessageLoopRun(int*)
0x00005ce726df40c0	(chrome -browser_main_loop.cc:1052 )	content::BrowserMainLoop::RunMainMessageLoopParts()
0x00005ce726df6fd1	(chrome -browser_main_runner.cc:161 )	content::BrowserMainRunnerImpl::Run()
0x00005ce726dec94d	(chrome -browser_main.cc:46 )	content::BrowserMain(content::MainFunctionParams const&)
0x00005ce7287b3ae6	(chrome -content_main_runner.cc:423 )	content::ContentMainRunnerImpl::Run()
0x00005ce7287bf793	(chrome -main.cc:453 )	service_manager::Main(service_manager::MainParams const&)
0x00005ce72630fcb8	(chrome -content_main.cc:19 )	ChromeMain
0x00007f3ea71de735	(libc-2.23.so -libc-start.c:289 )	__libc_start_main
0x00005ce726304148	(chrome + 0x01092148 )	_start
0x00007ffc0be0e677