Job Controller: clean up metrics logging about the job racing result

net/http/http_server_properties.h

Index: net/http/http_server_properties.h
diff --git a/net/http/http_server_properties.h b/net/http/http_server_properties.h
index d699d2a62f083961352198afb1b47d70aae07d6c..eaf0468701c604de19fcfbd4ee0b0b5e1feafb3e 100644
--- a/net/http/http_server_properties.h
+++ b/net/http/http_server_properties.h
@@ -51,7 +51,8 @@ enum AlternateProtocolUsage {
 };
 
 // Log a histogram to reflect |usage|.
-NET_EXPORT void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage);
+NET_EXPORT void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage,
+                                                bool proxy_server_used);
 
 enum BrokenAlternateProtocolLocation {
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_HTTP_STREAM_FACTORY_IMPL_JOB = 0,