Update from chromium https://crrev.com/301315

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index 45d152a107945d57b624b3199a8a1baaaf6ce851..a11dd2e99724b1d24a168d2919515cb63876b5f9 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -1430,28 +1430,17 @@ bool HttpStreamFactoryImpl::Job::IsOrphaned() const {
 }
 
 void HttpStreamFactoryImpl::Job::ReportJobSuccededForRequest() {
-  net::AlternateProtocolExperiment alternate_protocol_experiment =
-      ALTERNATE_PROTOCOL_NOT_PART_OF_EXPERIMENT;
-  base::WeakPtr<HttpServerProperties> http_server_properties =
-      session_->http_server_properties();
-  if (http_server_properties) {
-    alternate_protocol_experiment =
-        http_server_properties->GetAlternateProtocolExperiment();
-  }
   if (using_existing_quic_session_) {
     // If an existing session was used, then no TCP connection was
     // started.
-    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_NO_RACE,
-                                    alternate_protocol_experiment);
+    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_NO_RACE);
   } else if (original_url_) {
     // This job was the alternate protocol job, and hence won the race.
-    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_WON_RACE,
-                                    alternate_protocol_experiment);
+    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_WON_RACE);
   } else {
     // This job was the normal job, and hence the alternate protocol job lost
     // the race.
-    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_LOST_RACE,
-                                    alternate_protocol_experiment);
+    HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_LOST_RACE);
   }
 }