Looks like this bug system has replaced the character with ????

It should be this symbol
http://apps.timwhitlock.info/unicode/inspect/hex/1F603

Thread 0 CRASHED [EXCEPTION_BREAKPOINT @ 0x69e4a519 ] MAGIC SIGNATURE THREAD
0x69e4a519	(chrome.dll -debugger_win.cc:21 )	base::debug::BreakDebugger()
0x6aa0b342	(chrome.dll -render_text_harfbuzz.cc:1287 )	gfx::RenderTextHarfBuzz::ItemizeTextToRuns(std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > const &,gfx::internal::TextRunList *)
0x6aa0a0b5	(chrome.dll -render_text_harfbuzz.cc:1532 )	gfx::RenderTextHarfBuzz::EnsureLayoutRunList()
0x6aa09d93	(chrome.dll -render_text_harfbuzz.cc:1065 )	gfx::RenderTextHarfBuzz::EnsureLayout()
0x6aa0ace3	(chrome.dll -render_text_harfbuzz.cc:796 )	gfx::RenderTextHarfBuzz::GetStringSizeF()
0x6aa0ac8a	(chrome.dll -render_text_harfbuzz.cc:791 )	gfx::RenderTextHarfBuzz::GetStringSize()
0x6a773411	(chrome.dll -label.cc:534 )	views::Label::GetTextSize()
0x6a77327b	(chrome.dll -label.cc:239 )	views::Label::GetPreferredSize()
0x6a7771e0	(chrome.dll -grid_layout.cc:604 )	views::ColumnSet::CalculateSize()
0x6a7777dc	(chrome.dll -grid_layout.cc:860 )	views::GridLayout::SizeRowsAndColumns(bool,int,int,gfx::Size *)
0x6a7775be	(chrome.dll -grid_layout.cc:803 )	views::GridLayout::Layout(views::View *)
0x6b98c478	(chrome.dll -manage_password_items_view.cc:288 )	ManagePasswordItemsView::AddRows()
0x6b98c217	(chrome.dll -manage_password_items_view.cc:275 )	ManagePasswordItemsView::ManagePasswordItemsView(ManagePasswordsBubbleModel *,std::vector<autofill::PasswordForm const *,std::allocator<autofill::PasswordForm const *> > const &)
0x6b96f384	(chrome.dll -manage_passwords_bubble_view.cc:314 )	ManagePasswordsBubbleView::PendingView::PendingView(ManagePasswordsBubbleView *)
0x6b9701a9	(chrome.dll -manage_passwords_bubble_view.cc:826 )	ManagePasswordsBubbleView::Refresh()
0x6b441f38	(chrome.dll -bubble_dialog_delegate.cc:65 )	views::BubbleDialogDelegateView::CreateBubble(views::BubbleDialogDelegateView *)
0x6b970309	(chrome.dll -manage_passwords_bubble_view.cc:744 )	ManagePasswordsBubbleView::ShowBubble(content::WebContents *,LocationBarBubbleDelegateView::DisplayReason)
0x6b797743	(chrome.dll -tab_dialogs_views.cc:63 )	TabDialogsViews::ShowManagePasswordsBubble(bool)
0x6ac127ed	(chrome.dll -browser_commands.cc:832 )	chrome::ManagePasswordsForPage(Browser *)
0x6abb7eac	(chrome.dll -browser_command_controller.cc:468 )	chrome::BrowserCommandController::ExecuteCommandWithDisposition(int,WindowOpenDisposition)
0x6b3ff140	(chrome.dll -command_updater.cc:50 )	CommandUpdater::ExecuteCommandWithDisposition(int,WindowOpenDisposition)
0x6b3ff110	(chrome.dll -command_updater.cc:43 )	CommandUpdater::ExecuteCommand(int)
0x6abe273e	(chrome.dll -manage_passwords_ui_controller.cc:420 )	ManagePasswordsUIController::ShowBubbleWithoutUserInteraction()
0x6abe2801	(chrome.dll -manage_passwords_ui_controller.cc:180 )	ManagePasswordsUIController::UpdateIconAndBubbleState(ManagePasswordsIconView *)
0x6b77f4a8	(chrome.dll -location_bar_view.cc:1027 )	LocationBarView::RefreshManagePasswordsIconView()
0x6b77fc27	(chrome.dll -location_bar_view.cc:1103 )	LocationBarView::UpdateManagePasswordsIconAndBubble()
0x6abe27c4	(chrome.dll -manage_passwords_ui_controller.cc:378 )	ManagePasswordsUIController::UpdateBubbleAndIconVisibility()
0x6abe259c	(chrome.dll -manage_passwords_ui_controller.cc:87 )	ManagePasswordsUIController::OnPasswordSubmitted(std::unique_ptr<password_manager::PasswordFormManager,std::default_delete<password_manager::PasswordFormManager> >)
0x6b400444	(chrome.dll -chrome_password_manager_client.cc:234 )	ChromePasswordManagerClient::PromptUserToSaveOrUpdatePassword(std::unique_ptr<password_manager::PasswordFormManager,std::default_delete<password_manager::PasswordFormManager> >,password_manager::CredentialSourceType,bool)
0x6afc0e21	(chrome.dll -password_manager.cc:693 )	password_manager::PasswordManager::OnLoginSuccessful()
0x6afc110c	(chrome.dll -password_manager.cc:635 )	password_manager::PasswordManager::OnPasswordFormsRendered(password_manager::PasswordManagerDriver *,std::vector<autofill::PasswordForm,std::allocator<autofill::PasswordForm> > const &,bool)
0x6b8d7dac	(chrome.dll -content_password_manager_driver.cc:193 )	password_manager::ContentPasswordManagerDriver::OnPasswordFormsRendered(std::vector<autofill::PasswordForm,std::allocator<autofill::PasswordForm> > const &,bool)
0x6b8d7433	(chrome.dll -ipc_message_templates.h:121 )	IPC::MessageT<AutofillHostMsg_PasswordFormsRendered_Meta,std::tuple<std::vector<autofill::PasswordForm,std::allocator<autofill::PasswordForm> >,bool>,void>::Dispatch<password_manager::ContentPasswordManagerDriver,password_manager::ContentPasswordManagerDriver,void,void ( password_manager::ContentPasswordManagerDriver::*)(std::vector<autofill::PasswordForm,std::allocator<autofill::PasswordForm> > const &,bool)>(IPC::Message const *,password_manager::ContentPasswordManagerDriver *,password_manager::ContentPasswordManagerDriver *,void *,void ( password_manager::ContentPasswordManagerDriver::*)(std::vector<autofill::PasswordForm,std::allocator<autofill::PasswordForm> > const &,bool))
0x6b8d7ad3	(chrome.dll -content_password_manager_driver.cc:149 )	password_manager::ContentPasswordManagerDriver::HandleMessage(IPC::Message const &)
0x6b8d5c21	(chrome.dll -content_password_manager_driver_factory.cc:104 )	password_manager::ContentPasswordManagerDriverFactory::OnMessageReceived(IPC::Message const &,content::RenderFrameHost *)
0x6ac3487e	(chrome.dll -web_contents_impl.cc:614 )	content::WebContentsImpl::OnMessageReceived(content::RenderViewHost *,content::RenderFrameHost *,IPC::Message const &)
0x6ac35209	(chrome.dll -web_contents_impl.cc:3869 )	content::WebContentsImpl::OnMessageReceived(content::RenderFrameHost *,IPC::Message const &)
0x6ac3f0b6	(chrome.dll -render_frame_host_impl.cc:480 )	content::RenderFrameHostImpl::OnMessageReceived(IPC::Message const &)
0x6ac45e4d	(chrome.dll -render_process_host_impl.cc:1776 )	content::RenderProcessHostImpl::OnMessageReceived(IPC::Message const &)
0x6a8047f7	(chrome.dll -ipc_channel_proxy.cc:282 )	IPC::ChannelProxy::Context::OnDispatchMessage(IPC::Message const &)
0x6ac4900a	(chrome.dll -bind_internal.h:362 )	base::internal::Invoker<base::IndexSequence<0,1>,base::internal::BindState<base::internal::RunnableAdapter<bool ( content::BrowserMessageFilter::Internal::*)(IPC::Message const &)>,void ,content::BrowserMessageFilter::Internal * const,IPC::Message const &>,base::internal::InvokeHelper<0,void,base::internal::RunnableAdapter<bool ( content::BrowserMessageFilter::Internal::*)(IPC::Message const &)> >,void >::Run(base::internal::BindStateBase *)
0x69eaa06a	(chrome.dll -task_annotator.cc:51 )	base::debug::TaskAnnotator::RunTask(char const *,base::PendingTask const &)
0x69e563ee	(chrome.dll -message_loop.cc:479 )	base::MessageLoop::RunTask(base::PendingTask const &)
0x69e56d71	(chrome.dll -message_loop.cc:600 )	base::MessageLoop::DoWork()
0x69eaa51e	(chrome.dll -message_pump_win.cc:167 )	base::MessagePumpForUI::DoRunLoop()
0x69eaa1a5	(chrome.dll -message_pump_win.cc:50 )	base::MessagePumpWin::Run(base::MessagePump::Delegate *)
0x69e90a33	(chrome.dll -run_loop.cc:35 )	base::RunLoop::Run()
0x6a67b175	(chrome.dll -chrome_browser_main.cc:1856 )	ChromeBrowserMainParts::MainMessageLoopRun(int *)
0x6acb4256	(chrome.dll -browser_main_loop.cc:945 )	content::BrowserMainLoop::RunMainMessageLoopParts()
0x6acb15ae	(chrome.dll -browser_main_runner.cc:154 )	content::BrowserMainRunnerImpl::Run()
0x6ac75a10	(chrome.dll -browser_main.cc:45 )	content::BrowserMain(content::MainFunctionParams const &)
0x6a769f74	(chrome.dll -content_main_runner.cc:422 )	content::RunNamedProcessTypeMain(std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,content::MainFunctionParams const &,content::ContentMainDelegate *)
0x6a769ee2	(chrome.dll -content_main_runner.cc:789 )	content::ContentMainRunnerImpl::Run()
0x6a767957	(chrome.dll -content_main.cc:19 )	content::ContentMain(content::ContentMainParams const &)
0x6a637fac	(chrome.dll -chrome_main.cc:84 )	ChromeMain
0x0138fcd6	(chrome.exe -main_dll_loader_win.cc:183 )	MainDllLoader::Launch(HINSTANCE__ *)
0x0138f3b6	(chrome.exe -chrome_exe_main_win.cc:268 )	wWinMain
0x013ba423	(chrome.exe -exe_common.inl:255 )	__scrt_common_main_seh
0x77413389	(kernel32.dll + 0x00013389 )	BaseThreadInitThunk
0x77c79901	(ntdll.dll + 0x00039901 )	__RtlUserThreadStart
0x77c798d4	(ntdll.dll + 0x000398d4 )	_RtlUserThreadStart

I can confirm this bug in current stable and beta, but it appears fixed in dev (53.0.2783.2). Moreover, the fix seems to be https://codereview.chromium.org/2081273002, so duping against bug 606009 tracking that.