[net] Change order of RequestPriority to natural: higher > lower

net/http/http_network_transaction.cc

Index: net/http/http_network_transaction.cc
diff --git a/net/http/http_network_transaction.cc b/net/http/http_network_transaction.cc
index 0a88bb813ed4e3a00425d7ab02bd3f9a5b27f7ab..43df7ced5fac45c4290af12337f78319d8c95cbb 100644
--- a/net/http/http_network_transaction.cc
+++ b/net/http/http_network_transaction.cc
@@ -1020,10 +1020,10 @@ void HttpNetworkTransaction::LogTransactionConnectedMetrics() {
     }
   }
 
-  // Currently, non-zero priority requests are frame or sub-frame resource
+  // Currently, non-HIGHEST priority requests are frame or sub-frame resource
   // types.  This will change when we also prioritize certain subresources like
   // css, js, etc.
-  if (request_->priority) {
+  if (request_->priority != HIGHEST) {
     UMA_HISTOGRAM_CUSTOM_TIMES(
         "Net.Priority_High_Latency_b",
         total_duration,