fix an issue where the refresh benchmark would overwrite a completer (#4315)
fix an issue where the refresh benchmark would overwrite a completer (#4315)
Hixie/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,turnidge/flutter,Hixie/flutter,flutter/flutter,aghassemi/flutter,Hixie/flutter,tvolkert/flutter,flutter/flutter,flutter/flutter,tvolkert/flutter,Hixie/flutter,cbracken/flutter,turnidge/flutter,flutter/flutter,aghassemi/flutter,flutter/flutter,flutter/flutter,tvolkert/flutter,Hixie/flutter,flutter/flutter,aghassemi/flutter,tvolkert/flutter,turnidge/flutter,tvolkert/flutter,turnidge/flutter,cbracken/flutter,aghassemi/flutter,cbracken/flutter,flutter/flutter,flutter/flutter,Hixie/flutter,cbracken/flutter,tvolkert/flutter,turnidge/flutter,tvolkert/flutter,Hixie/flutter,cbracken/flutter,cbracken/flutter,Hixie/flutter,Hixie/flutter,cbracken/flutter,Hixie/flutter,cbracken/flutter,cbracken/flutter,cbracken/flutter,tvolkert/flutter