Fix signature of toStringName() ...which I accidentally changed in a previous commit.
Fix signature of toStringName()
...which I accidentally changed in a previous commit.

flutter/flutter,flutter/flutter,jason-simmons/flutter,tvolkert/flutter,cbracken/flutter,tvolkert/flutter,turnidge/flutter,cbracken/flutter,Hixie/flutter,flutter/flutter,Hixie/flutter,flutter/flutter,flutter/flutter,turnidge/flutter,turnidge/flutter,tvolkert/flutter,flutter/flutter,Hixie/flutter,cbracken/flutter,turnidge/flutter,tvolkert/flutter,Hixie/flutter,flutter/flutter,jason-simmons/flutter,cbracken/flutter,Hixie/flutter,jason-simmons/flutter,jason-simmons/flutter,flutter/flutter,aghassemi/flutter,aghassemi/flutter,Hixie/flutter,tvolkert/flutter,aghassemi/flutter,Hixie/flutter,tvolkert/flutter,aghassemi/flutter,Hixie/flutter,tvolkert/flutter,tvolkert/flutter,cbracken/flutter,cbracken/flutter,flutter/flutter,cbracken/flutter,Hixie/flutter,Hixie/flutter,turnidge/flutter,tvolkert/flutter,cbracken/flutter,cbracken/flutter,flutter/flutter,tvolkert/flutter,cbracken/flutter