Happens at ToT. Currently r387541 in the test build.

1. Type chrome://devices in the omnibox and navigate
2. Type chrome://settings in the omnibox and navigate

Expected: Successfull Navigation
Actual: DCHECK failure

[54756:54756:0415/154051:FATAL:uber_ui.cc(204)] Check failed: std::string(chrome::kChromeUIUberHost) == source_url.host() (chrome vs. devices)
#0 0x7efdf1a9cb4e base::debug::StackTrace::StackTrace()
#1 0x7efdf1af823f logging::LogMessage::~LogMessage()
#2 0x7efdf3ee0e45 UberUI::OverrideHandleWebUIMessage()
#3 0x7efded02fb35 content::WebUIImpl::ProcessWebUIMessage()
#4 0x7efded02e72b content::WebUIImpl::OnWebUISend()
...