Mojo: Mojom: Fix no-namespace handling for C++ generator.

Note that, in python, foo.split('.') returns [foo] if foo doesn't
contain '.'. This is what we want if foo is nonempty, but not what we
want if it isn't.

R=sky@chromium.org

Review URL: https://codereview.chromium.org/243733004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@264920 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed