#3 0x55e0f127ff54 blink::FrameLoader::DispatchDidClearWindowObjectInMainWorld()
#4 0x55e0f08b5d1b blink::LocalWindowProxy::Initialize()
#5 0x55e0f08b555b blink::WindowProxy::SetGlobalProxy()
#6 0x55e0f0d0e087 blink::WindowProxyManager::SetGlobalProxies()
#7 0x55e0f0dec291 blink::WebFrame::Swap()
#8 0x55e0f16a2b1a content::RenderFrameImpl::SwapIn()
#9 0x55e0f16ac7b2 content::RenderFrameImpl::DidCommitProvisionalLoad()
#10 0x55e0f0eb57af blink::LocalFrameClientImpl::DispatchDidCommitLoad()
#11 0x55e0f126b721 blink::DocumentLoader::DidCommitNavigation()
#12 0x55e0f126aa39 blink::DocumentLoader::InstallNewDocument()
#13 0x55e0f126a765 blink::DocumentLoader::CommitNavigation()
#14 0x55e0f1269b36 blink::DocumentLoader::CommitData()
#15 0x55e0f126acd1 blink::DocumentLoader::ProcessData()
#16 0x55e0f126abb0 blink::DocumentLoader::DataReceived()
#17 0x55e0edf52593 blink::Resource::AppendData()
#18 0x55e0edf6bb0b blink::ResourceLoader::DidReceiveData()
#19 0x55e0f171b231 content::WebURLLoaderImpl::Context::OnReceivedData()


#3 0x55e0f127fefa blink::FrameLoader::DispatchDidClearDocumentOfWindowObject()
#4 0x55e0f126ab2b blink::DocumentLoader::InstallNewDocument()
#5 0x55e0f126a765 blink::DocumentLoader::CommitNavigation()
#6 0x55e0f1269b36 blink::DocumentLoader::CommitData()
#7 0x55e0f126acd1 blink::DocumentLoader::ProcessData()
#8 0x55e0f126abb0 blink::DocumentLoader::DataReceived()
#9 0x55e0edf52593 blink::Resource::AppendData()
#10 0x55e0edf6bb0b blink::ResourceLoader::DidReceiveData()
#11 0x55e0f171b231 content::WebURLLoaderImpl::Context::OnReceivedData()

Please refer to  crbug.com/772697  for repro steps.