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

net/http/http_network_transaction.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_network_transaction.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 1002 matching lines @@
 
     if (!reused_socket) {
       UMA_HISTOGRAM_CUSTOM_TIMES(
           base::FieldTrial::MakeName("Net.Transaction_Connected_New_b",
                                      "SpdyImpact"),
           total_duration, base::TimeDelta::FromMilliseconds(1),
           base::TimeDelta::FromMinutes(10), 100);
     }
   }
 
-  // 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,
         base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(10),
         100);
   } else {
     UMA_HISTOGRAM_CUSTOM_TIMES(
         "Net.Priority_Low_Latency_b",
         total_duration,
         base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(10),
@@ skipping 334 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net