The browser is crashing on Win 7 and Win 7 x64 bots while running this story with:

	Last event: c74.2f8: Access violation - code c0000005 (first/second chance not available)
	  debugger time: Tue Dec 13 02:03:56.930 2016 (UTC - 8:00)
	ChildEBP RetAddr  Args to Child
	002be7e0 6d8ba51a 0e076f88 00000000 6d8ba51a chrome_6cae0000!content::SyntheticGestureTargetBase::DispatchInputEventToPlatform+0x130
	002be7fc 6d8b9fbe 0e076f88 002be828 002be884 chrome_6cae0000!content::SyntheticMouseDriver::DispatchEvent+0x1b
	002be830 6d8b9b45 002be884 0e076f88 6f0fd86c chrome_6cae0000!content::SyntheticSmoothMoveGesture::ForwardTouchInputEvents+0x17b
	002be84c 6d8b8808 00000000 0e076f88 0e076868 chrome_6cae0000!content::SyntheticSmoothMoveGesture::ForwardInputEvents+0x6f
	002be87c 6d8ec057 fc6b5193 00000001 0952a2d0 chrome_6cae0000!content::SyntheticGestureController::Flush+0x7f
	002be898 6d8f3ea9 0e076868 0e077120 00000000 chrome_6cae0000!content::RenderWidgetHostImpl::FlushInput+0x33
	002be8ac 6d44cab0 002be908 002bf368 08fd00f8 chrome_6cae0000!content::RenderWidgetHostViewAura::OnBeginFrame+0x1b
	002be928 6d44f313 08fd00f8 00000000 fc6b5190 chrome_6cae0000!cc::DelayBasedBeginFrameSource::OnTimerTick+0x1a0
	002be940 6cbdeb54 08fd0128 00000000 002be96c chrome_6cae0000!cc::DelayBasedTimeSource::OnTimerTick+0x43
	002be950 6d44fa53 0dfb3628 6cbdeb54 0dfb2e80 chrome_6cae0000!base::internal::Invoker<base::internal::BindState<void (__thiscall base::CancelableCallback<void __cdecl(void)>::*)(void)const ,base::WeakPtr<base::CancelableCallback<void __cdecl(void)> > >,void __cdecl(void)>::Run+0x34
	002be958 6cbdeb54 0dfb2e80 00000000 fc6b50e9 chrome_6cae0000!base::CancelableCallback<void __cdecl(void)>::Forward+0x13
	002be96c 6d1e9d89 0dfb2e80 002bf368 00c594c0 chrome_6cae0000!base::internal::Invoker<base::internal::BindState<void (__thiscall base::CancelableCallback<void __cdecl(void)>::*)(void)const ,base::WeakPtr<base::CancelableCallback<void __cdecl(void)> > >,void __cdecl(void)>::Run+0x34
	002be9d8 6d1a793e 6f04f30c 002bf368 00c54588 chrome_6cae0000!base::debug::TaskAnnotator::RunTask+0x179
	002bf34c 6d1a7ae0 002bf368 00c594c0 fc6b50e9 chrome_6cae0000!base::MessageLoop::RunTask+0x30e
	002bf360 6d1a8429 09119188 008227c2 fc6b50e9 chrome_6cae0000!base::MessageLoop::DeferOrRunPendingTask+0x30
	002bf3e4 6d1ea3b7 00c54588 00000000 00c54580 chrome_6cae0000!base::MessageLoop::DoDelayedWork+0xb9
	002bf418 6d1e9f35 00000000 002bf484 00c594c0 chrome_6cae0000!base::MessagePumpForUI::DoRunLoop+0x77
	002bf444 6d1bfd9d 00c594c0 00c59360 6e48c217 chrome_6cae0000!base::MessagePumpWin::Run+0x55
	002bf470 6db1749e 00000000 024d20b0 6f04f300 chrome_6cae0000!base::RunLoop::Run+0x5d
	002bf4a8 6d78ca5b 024d20c0 ffffffff 00c5e4a8 chrome_6cae0000!ChromeBrowserMainParts::MainMessageLoopRun+0x95
	002bf4bc 6d78da83 00c5e4a8 00000000 002bf4e4 chrome_6cae0000!content::BrowserMainLoop::RunMainMessageLoopParts+0x50
	002bf4cc 6d7898c0 00000000 00c24050 00c24100 chrome_6cae0000!content::BrowserMainRunnerImpl::Run+0x13
	002bf4e4 6dad94c8 002bf51c 00000000 00000000 chrome_6cae0000!content::BrowserMain+0x82
	002bf4f8 6dad9436 002bf534 002bf51c 002bf570 chrome_6cae0000!content::RunNamedProcessTypeMain+0x61
	002bf550 6dad8c13 004deeb8 6ec24814 002bf5a0 chrome_6cae0000!content::ContentMainRunnerImpl::Run+0x97
	002bf560 6d55f4fc 002bf58c 6d55f473 6eafb148 chrome_6cae0000!content::ContentMain+0x23
	*** WARNING: Unable to verify checksum for chrome.exe
https://luci-logdog.appspot.com/v/?s=chrome%2Fbb%2Fchromium.perf%2FWin_7_Perf%2F72%2F%2B%2Frecipes%2Fsteps%2Fsystem_health.memory_desktop_on__102b__GPU_on_Windows_on_Windows-2008ServerR2-SP1%2F0%2Fstdout

Full crash log attached.

Interestingly, the story seems to run fine on other Win bots (ATI GPU, Intel GPU, WIN 8, etc.). For example:

[ RUN      ] c:\b\s\w\itxh2v2j\tmpvlnkfq.html
[       OK ] c:\b\s\w\itxh2v2j\tmpvlnkfq.html (1088 ms)
[       OK ] browse:search:google (42950 ms)
https://luci-logdog.appspot.com/v/?s=chrome%2Fbb%2Fchromium.perf%2FWin_7_ATI_GPU_Perf%2F74%2F%2B%2Frecipes%2Fsteps%2Fsystem_health.memory_desktop_on_ATI_GPU_on_Windows_on_Windows-2008ServerR2-SP1%2F0%2Fstdout

I'm proceeding to disable the story on windows.