Fail rather than crash if username+password are unspecified for NTLM on Linux+OSX.
Fail rather than crash if username+password are unspecified for NTLM on Linux+OSX.

This will be yanked out, but is being used to triage a bug.

BUG=50517
TEST=None

Review URL: http://codereview.chromium.org/3150033

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@57211 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser