This crash happens in some of the pointer events that are using gpu benchmarking while sending touch actions:

[48422:48422:0615/042040:732378223419:FATAL:synthetic_gesture_target_base.cc(62)] Check failed: web_touch.touches[i].state != WebTouchPoint::StatePressed || PointIsWithinContents(web_touch.touches[i].position.x, web_touch.touches[i].position.y). Touch coordinates are not within content bounds on TouchStart.
#0 0x00000047614e base::debug::StackTrace::StackTrace()
#1 0x00000047ff7b logging::LogMessage::~LogMessage()
#2 0x00000235e9b9 content::SyntheticGestureTargetBase::DispatchInputEventToPlatform()
#3 0x00000235fcce content::SyntheticSmoothMoveGesture::ForwardTouchInputEvents()
#4 0x00000235f945 content::SyntheticSmoothMoveGesture::ForwardInputEvents()
#5 0x00000235dcb0 content::SyntheticGestureController::Flush()
#6 0x0000004d0bc5 base::Timer::RunScheduledTask()
#7 0x0000004c5836 base::debug::TaskAnnotator::RunTask()
#8 0x000000482935 base::MessageLoop::RunTask()
#9 0x000000482c28 base::MessageLoop::DeferOrRunPendingTask()
#10 0x00000048316c base::MessageLoop::DoDelayedWork()
#11 0x0000004c3d90 base::(anonymous namespace)::WorkSourceDispatch()
#12 0x7f0b0846ae04 g_main_context_dispatch
#13 0x7f0b0846b048 <unknown>
#14 0x7f0b0846b0ec g_main_context_iteration
#15 0x0000004c3c46 base::MessagePumpGlib::Run()
#16 0x0000004941ee base::RunLoop::Run()
#17 0x000002278899 content::BrowserMainLoop::MainMessageLoopRun()
#18 0x0000022786e5 content::BrowserMainLoop::RunMainMessageLoopParts()
#19 0x0000020c24ad content::BrowserMainRunnerImpl::Run()
#20 0x000000420498 LayoutTestBrowserMain()
#21 0x00000041ff23 content::ShellMainDelegate::RunProcess()
#22 0x000000462dd2 content::RunNamedProcessTypeMain()
#23 0x000000463737 content::ContentMainRunnerImpl::Run()
#24 0x000000462250 content::ContentMain()
#25 0x00000041edbb main
#26 0x7f0b03f95f45 __libc_start_main
#27 0x00000041ecb9 <unknown>