Chrome Version: (copy from chrome://version)
OS: (e.g. Win7, OSX 10.9.5, etc...)

What steps will reproduce the problem?
(1) https://whytls.com/test/frames.htm
(2) Hit CTRL+F and type "DOMAIN"
(3) Click "Add Frame" twice. 

 Observe: "Domain" is found in both subframes.

(4) Click "Remove All"

---------------------------
Fatal error
---------------------------
[27740:15688:0407/145138.576:FATAL:frame_tree_node.cc(558)] Check failed: false. FrameTreeNode not found in its parent's children.
Backtrace:
	base::debug::StackTrace::StackTrace [0x100ABD27+55]
	base::debug::StackTrace::StackTrace [0x100AB921+17]
	logging::LogMessage::~LogMessage [0x100F920B+59]
	content::FrameTreeNode::GetSibling [0x11DAA4A9+281]
	content::FrameTreeNode::NextSibling [0x11DAA9E1+17]
	content::FindRequestManager::GetInitialFrame [0x11D841D5+213]
	content::FindRequestManager::Traverse [0x11D855E9+505]
	content::FindRequestManager::Traverse [0x11D8568A+666]
	content::FindRequestManager::Traverse [0x11D85483+147]
	content::FindRequestManager::FinalUpdateReceived [0x11D83569+153]
	content::FindRequestManager::RemoveFrame [0x11D84EFC+492]
	content::FindRequestManager::FrameObserver::FrameDeleted [0x11D83E36+22]
	content::WebContentsImpl::OnFrameRemoved [0x127CDDE5+101]
	base::internal::FunctorTraits<void (__thiscall content::WebContentsImpl::*)(content::RenderFrameHost *),void>::Invoke<content::WebContentsImpl *,content::RenderFrameHost *> [0x127A82B4+36]
	base::internal::InvokeHelper<0,void>::MakeItSo<void (__thiscall content::WebContentsImpl::*const &)(content::RenderFrameHost *),content::WebContentsImpl *,content::RenderFrameHost *> [0x127A8AB5+53]
	base::internal::Invoker<base::internal::BindState<void (__thiscall content::WebContentsImpl::*)(content::RenderFrameHost *),base::internal::UnretainedWrapper<content::WebContentsImpl> >,void __cdecl(content::RenderFrameHost *)>::RunImpl<void (__thiscall c [0x127A9288+72]
	base::internal::Invoker<base::internal::BindState<void (__thiscall content::WebContentsImpl::*)(content::RenderFrameHost *),base::internal::UnretainedWrapper<content::WebContentsImpl> >,void __cdecl(content::RenderFrameHost *)>::Run [0x127D4231+49]
	base::Callback<void __cdecl(content::RenderFrameHost *),1,1>::Run [0x11D9D9DE+46]
	content::FrameTree::FrameRemoved [0x11D9D287+199]
	content::FrameTreeNode::~FrameTreeNode [0x11DA7B57+55]
	content::FrameTreeNode::`scalar deleting destructor' [0x11D9C7DF+15]
	std::default_delete<content::FrameTreeNode>::operator() [0x11DA9105+37]
	std::unique_ptr<content::FrameTreeNode,std::default_delete<content::FrameTreeNode> >::reset [0x11DB100A+58]
	content::FrameTreeNode::RemoveChild [0x11DAAE63+179]
	content::FrameTree::RemoveFrame [0x11D9D810+160]
	content::RenderFrameHostImpl::OnDetach [0x11E2BD0F+31]
	??$DispatchToMethodImpl@PAVRenderFrameHostImpl@content@@P812@AEXXZABV?$tuple@$$V@std@@$S@base@@YAXABQAVRenderFrameHostImpl@content@@P812@AEXXZABV?$tuple@$$V@std@@U?$IndexSequence@$S@0@@Z [0x11E0216E+14]
	??$DispatchToMethod@PAVRenderFrameHostImpl@content@@P812@AEXXZABV?$tuple@$$V@std@@@base@@YAXABQAVRenderFrameHostImpl@content@@P812@AEXXZABV?$tuple@$$V@std@@@Z [0x11E00DC7+39]
	??$DispatchToMethod@VRenderFrameHostImpl@content@@P812@AEXXZXV?$tuple@$$V@std@@@IPC@@YAXPAVRenderFrameHostImpl@content@@P812@AEXXZPAXABV?$tuple@$$V@std@@@Z [0x11E014F8+24]
	??$Dispatch@VRenderFrameHostImpl@content@@V12@XP812@AEXXZ@?$MessageT@UFrameHostMsg_Detach_Meta@@V?$tuple@$$V@std@@X@IPC@@SA_NPBVMessage@1@PAVRenderFrameHostImpl@content@@1PAXP834@AEXXZ@Z [0x11DFED65+213]
	content::RenderFrameHostImpl::OnMessageReceived [0x11E2DFF6+966]
	content::RenderProcessHostImpl::OnMessageReceived [0x124285B4+1332]
	IPC::ChannelProxy::Context::OnDispatchMessage [0x013D5B73+115]
	base::internal::FunctorTraits<void (__thiscall IPC::ChannelProxy::Context::*)(IPC::Message const &),void>::Invoke<scoped_refptr<IPC::ChannelProxy::Context> const &,IPC::Message const &> [0x013CF6C5+37]
	base::internal::InvokeHelper<0,void>::MakeItSo<void (__thiscall IPC::ChannelProxy::Context::*const &)(IPC::Message const &),scoped_refptr<IPC::ChannelProxy::Context> const &,IPC::Message const &> [0x013CFC45+53]
	base::internal::Invoker<base::internal::BindState<void (__thiscall IPC::ChannelProxy::Context::*)(IPC::Message const &),scoped_refptr<IPC::ChannelProxy::Context>,IPC::Message>,void __cdecl(void)>::RunImpl<void (__thiscall IPC::ChannelProxy::Context::*cons [0x013CFF93+83]
	base::internal::Invoker<base::internal::BindState<void (__thiscall IPC::ChannelProxy::Context::*)(IPC::Message const &),scoped_refptr<IPC::ChannelProxy::Context>,IPC::Message>,void __cdecl(void)>::Run [0x013D64C4+36]
	base::Callback<void __cdecl(void),0,0>::Run [0x100B2515+53]
	base::debug::TaskAnnotator::RunTask [0x100B271C+476]
	base::MessageLoop::RunTask [0x10128DE2+626]
	base::MessageLoop::DeferOrRunPendingTask [0x10126E9C+44]
	base::MessageLoop::DoWork [0x10127472+242]
	base::MessagePumpForUI::DoRunLoop [0x10130D23+67]
	base::MessagePumpWin::Run [0x10131CBB+123]
	base::MessageLoop::RunHandler [0x10128AFE+398]
	base::RunLoop::Run [0x101DCAA6+166]
	ChromeBrowserMainParts::MainMessageLoopRun [0x04B92B98+248]
	content::BrowserMainLoop::RunMainMessageLoopParts [0x11A4D7A1+225]
	content::BrowserMainRunnerImpl::Run [0x11A535E3+243]
	content::BrowserMain [0x11A3F7DB+155]
	content::RunNamedProcessTypeMain [0x13419DB7+135]
	content::ContentMainRunnerImpl::Run [0x13419C95+405]
	content::ContentServiceManagerMainDelegate::Run [0x13417B44+36]
	service_manager::Main [0x194A90F9+329]
	content::ContentMain [0x13417F69+41]
	ChromeMain [0x036F2780+256]
	MainDllLoader::Launch [0x0042F1FD+829]
	wWinMain [0x0042A0AB+571]
	invoke_main [0x004E952E+30] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:118)
	__scrt_common_main_seh [0x004E9390+336] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253)
	__scrt_common_main [0x004E922D+13] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:296)
	wWinMainCRTStartup [0x004E9548+8] (f:\dd\vctools\crt\vcstartup\src\startup\exe_wwinmain.cpp:17)


---------------------------
OK   
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