ABANDONED Handle multiple AlternateProtocols for each HostPortPair.

net/http/http_server_properties.cc

Index: net/http/http_server_properties.cc
diff --git a/net/http/http_server_properties.cc b/net/http/http_server_properties.cc
index a9cbd7230e5eea4f24daf499cd2dd9a924a087aa..03ac55cec16c575d5892514d59c79ff435c6aa24 100644
--- a/net/http/http_server_properties.cc
+++ b/net/http/http_server_properties.cc
@@ -101,9 +101,19 @@ AlternateProtocol AlternateProtocolFromNextProto(NextProto next_proto) {
 }
 
 std::string AlternateProtocolInfo::ToString() const {
-  return base::StringPrintf("%d:%s p=%f", port,
-                            AlternateProtocolToString(protocol),
-                            probability);
+  return base::StringPrintf(
+      "%d:%s p=%f", port, AlternateProtocolToString(protocol), probability);
+}
+
+std::string AlternateProtocolsToString(AlternateProtocols protocols) {
+  std::string output{};
+  for (AlternateProtocols::const_iterator it = protocols.begin();
+       it != protocols.end();
+       ++it) {
+    output.append(it->ToString());
+    output.append("; ");
+  }
+  return output;
 }
 
 }  // namespace net