GitLab

Fix call to GetDefaultBrowser in print cloud because we are no longer guaranteed to have a Default profile in multi-profile land.

BUG=83792
TEST=PrintCloud works fine in Mac OS with no open windows.

Review URL: http://codereview.chromium.org/7616011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96546 0039d316-1c4b-4281-b951-d872f2087c98