You are probably looking for a change made after 573102 (known good), but no later than 573103 (first known bad).

CHANGE-LOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.

https://chromium.googlesource.com/chromium/src/+log/7e620043777b98f594a12b924f157b668aae533c..6cf891f99d20238a9365fcde8bb995c4a7ec1cb8

Suspect: https://chromium.googlesource.com/chromium/src/+/6cf891f99d20238a9365fcde8bb995c4a7ec1cb8

@takumif: Could you please help to reassign if your change is not the cause for this change. 

Note : Issue is not seen on Linux (14.04 LTS)OS 

Thank You!

Stack Trace for the crash id:
-----------------------------
Thread 0 (id: 0x1020) CRASHED [EXCEPTION_ACCESS_VIOLATION_EXEC @ 0x07fee5e1 ] MAGIC SIGNATURE THREAD
Stack Quality64%Show frame trust levels
0x07fee5e1		
0x000007fee5d739bd	(chrome.dll -menu_runner_impl.cc:182 )	views::internal::MenuRunnerImpl::OnMenuClosed(views::internal::MenuControllerDelegate::NotifyType,views::MenuItemView *,int)
0x000007fee60d9486	(chrome.dll -menu_controller.cc:2738 )	views::MenuController::ExitMenu()
0x000007fee60da838	(chrome.dll -menu_controller.cc:727 )	views::MenuController::OnMouseReleased(views::SubmenuView *,ui::MouseEvent const &)
0x000007fee42928ed	(chrome.dll -widget.cc:1225 )	views::Widget::OnMouseEvent(ui::MouseEvent *)
0x000007fee3f238d6	(chrome.dll -event_dispatcher.cc:191 )	ui::EventDispatcher::DispatchEvent(ui::EventHandler *,ui::Event *)
0x000007fee3f2349c	(chrome.dll -event_dispatcher.cc:139 )	ui::EventDispatcher::ProcessEvent(ui::EventTarget *,ui::Event *)
0x000007fee3f23376	(chrome.dll -event_dispatcher.cc:86 )	ui::EventDispatcherDelegate::DispatchEventToTarget(ui::EventTarget *,ui::Event *)
0x000007fee3f225fd	(chrome.dll -event_dispatcher.cc:58 )	ui::EventDispatcherDelegate::DispatchEvent(ui::EventTarget *,ui::Event *)
0x000007fee3f210ce	(chrome.dll -event_processor.cc:57 )	ui::EventProcessor::OnEventFromSource(ui::Event *)
0x000007fee3f20dff	(chrome.dll -event_source.cc:84 )	ui::EventSource::SendEventToSinkFromRewriter(ui::Event *,ui::EventRewriter const *)
0x000007fee3f20c45	(chrome.dll -event_source.cc:44 )	ui::EventSource::SendEventToSink(ui::Event *)
0x000007fee5531213	(chrome.dll -desktop_window_tree_host_win.cc:880 )	views::DesktopWindowTreeHostWin::HandleGestureEvent(ui::GestureEvent *)
0x000007fee3f1fc87	(chrome.dll -hwnd_message_handler.cc:2821 )	views::HWNDMessageHandler::HandleMouseEventInternal(unsigned int,unsigned __int64,__int64,bool)
0x000007fee3d92276	(chrome.dll -hwnd_message_handler.h:319 )	views::HWNDMessageHandler::_ProcessWindowMessage(HWND__ *,unsigned int,unsigned __int64,__int64,__int64 &,unsigned long)
0x000007fee3d9203b	(chrome.dll -hwnd_message_handler.cc:934 )	views::HWNDMessageHandler::OnWndProc(unsigned int,unsigned __int64,__int64)
0x000007fee3b914ee	(chrome.dll -wrapped_window_proc.h:76 )	base::win::WrappedWindowProc<&gfx::WindowImpl::WndProc(HWND__ *,unsigned int,unsigned __int64,__int64)>(HWND__ *,unsigned int,unsigned __int64,__int64)
0x77239bd0	(USER32.dll + 0x00019bd0 )	UserCallWinProcCheckWow
0x772398d9	(USER32.dll + 0x000198d9 )	DispatchMessageWorker
0x000007fee3f164fb	(chrome.dll -message_pump_win.cc:366 )	base::MessagePumpForUI::ProcessMessageHelper(tagMSG const &)
0x000007fee3c15a46	(chrome.dll -message_pump_win.cc:169 )	base::MessagePumpForUI::DoRunLoop()
0x000007fee3b0d797	(chrome.dll -message_pump_win.cc:56 )	base::MessagePumpWin::Run(base::MessagePump::Delegate *)
0x000007fee3b0d4e0	(chrome.dll -run_loop.cc:102 )	base::RunLoop::Run()
0x000007fee3f1364d	(chrome.dll -chrome_browser_main.cc:2053 )	ChromeBrowserMainParts::MainMessageLoopRun(int *)
0x000007fee3f13451	(chrome.dll -browser_main_loop.cc:1016 )	content::BrowserMainLoop::RunMainMessageLoopParts()
0x000007fee3f133fc	(chrome.dll -browser_main_runner_impl.cc:169 )	content::BrowserMainRunnerImpl::Run()
0x000007fee3b0e7a4	(chrome.dll -browser_main.cc:51 )	content::BrowserMain(content::MainFunctionParams const &,std::unique_ptr<content::BrowserProcessSubThread,std::default_delete<content::BrowserProcessSubThread> >)
0x000007fee3b0e63a	(chrome.dll -content_main_runner_impl.cc:600 )	content::RunBrowserProcessMain(content::MainFunctionParams const &,content::ContentMainDelegate *,std::unique_ptr<content::BrowserProcessSubThread,std::default_delete<content::BrowserProcessSubThread> >)
0x000007fee3b09c7d	(chrome.dll -content_main_runner_impl.cc:947 )	content::ContentMainRunnerImpl::Run()
0x000007fee3af5bbf	(chrome.dll -main.cc:459 )	service_manager::Main(service_manager::MainParams const &)
0x000007fee3af5647	(chrome.dll -content_main.cc:19 )	content::ContentMain(content::ContentMainParams const &)
0x000007fee3af1e59	(chrome.dll -chrome_main.cc:101 )	ChromeMain
0x000000013f46372b	(chrome.exe -main_dll_loader_win.cc:201 )	MainDllLoader::Launch(HINSTANCE__ *,base::TimeTicks)
0x000000013f461698	(chrome.exe -chrome_exe_main_win.cc:230 )	wWinMain
0x000000013f524891	(chrome.exe -exe_common.inl:283 )	__scrt_common_main_seh
0x76e559cc	(KERNEL32.dll + 0x000159cc )	BaseThreadInitThunk
0x7734b980	(ntdll.dll + 0x0002b980 )	RtlUserThreadStart

Adding release blocker label for this issue.Please reduce priority or remove if not the case.

Thank You!

This shouldn't be RBS as the Harmony Cast UI is only on canary and dev in M69.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/339ab575c8b467d5c34d981891d8e9605c171867

commit 339ab575c8b467d5c34d981891d8e9605c171867
Author: Takumi Fujimoto <takumif@chromium.org>
Date: Mon Jul 16 23:30:05 2018

Fix Media Router context menu crashes

When the context menu is closed, destroy the menu model asynchronously,
so that its command gets executed before the menu model is destroyed.

Bug:  861652 ,  861655 
Change-Id: Id0bf068e600f13ab187c0ad137ca15979363c61f
Reviewed-on: https://chromium-review.googlesource.com/1130657
Commit-Queue: Takumi Fujimoto <takumif@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575478}
[modify] https://crrev.com/339ab575c8b467d5c34d981891d8e9605c171867/chrome/browser/ui/toolbar/media_router_action.cc
[modify] https://crrev.com/339ab575c8b467d5c34d981891d8e9605c171867/chrome/browser/ui/toolbar/media_router_action.h
[modify] https://crrev.com/339ab575c8b467d5c34d981891d8e9605c171867/chrome/browser/ui/views/media_router/media_router_ui_browsertest.cc