Chrome Version: HEAD

What steps will reproduce the problem?
(1) Go to chrome://settings/content/cookies
(2) Add a exception with a wildcard e.g. Block "[*.]example.com"

What is the expected result?
Chrome should add this exception.

What happens instead?
It looks like Chrome is trying to fetch a favicon for "[*.]example.com" and fails with a DCHECK because this is not a valid url.

[161144:161144:0828/154655.014034:FATAL:gurl.cc(210)] Check failed: false. Trying to get the spec of an invalid URL!
#0 0x7fe17f361637 base::debug::StackTrace::StackTrace()
#1 0x7fe17f388271 logging::LogMessage::~LogMessage()
#2 0x7fe17db693ac GURL::spec()
#3 0x55ce63f80031 FaviconSource::HandleMissingResource()
#4 0x55ce63f7ffb2 FaviconSource::OnFaviconDataAvailable()
#5 0x55ce638c9e25 favicon::FaviconServiceImpl::RunFaviconRawBitmapCallbackWithBitmapResults()
#6 0x55ce6386ece3 history::(anonymous namespace)::RunWithFaviconResults()