Add metrics to track HTTP/0.9 usage for main frames and subresources

content/browser/loader/resource_loader.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 "content/browser/loader/resource_loader.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/location.h"
@@ skipping 691 matching lines @@
   }
 }
 
 void ResourceLoader::CallDidFinishLoading() {
   TRACE_EVENT_WITH_FLOW0("loading", "ResourceLoader::CallDidFinishLoading",
                          this, TRACE_EVENT_FLAG_FLOW_IN);
   delegate_->DidFinishLoading(this);
 }
 
 void ResourceLoader::RecordHistograms() {
+  ResourceRequestInfoImpl* info = GetRequestInfo();
   if (request_->response_info().network_accessed) {
-    UMA_HISTOGRAM_ENUMERATION("Net.HttpResponseInfo.ConnectionInfo",
-                              request_->response_info().connection_info,
-                              net::HttpResponseInfo::NUM_OF_CONNECTION_INFOS);
+    if (info->GetResourceType() == RESOURCE_TYPE_MAIN_FRAME) {
+      UMA_HISTOGRAM_ENUMERATION("Net.HttpResponseInfo.ConnectionInfo.MainFrame",
+                                request_->response_info().connection_info,
+                                net::HttpResponseInfo::NUM_OF_CONNECTION_INFOS);
+    } else {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Net.HttpResponseInfo.ConnectionInfo.SubResource",
+          request_->response_info().connection_info,
+          net::HttpResponseInfo::NUM_OF_CONNECTION_INFOS);
+    }
   }
 
-  ResourceRequestInfoImpl* info = GetRequestInfo();
-
   if (info->GetResourceType() == RESOURCE_TYPE_PREFETCH) {
     PrefetchStatus status = STATUS_UNDEFINED;
     TimeDelta total_time = base::TimeTicks::Now() - request_->creation_time();
 
     switch (request_->status().status()) {
       case net::URLRequestStatus::SUCCESS:
         if (request_->was_cached()) {
           status = STATUS_SUCCESS_FROM_CACHE;
           UMA_HISTOGRAM_TIMES("Net.Prefetch.TimeSpentPrefetchingFromCache",
                               total_time);
@@ skipping 14 matching lines @@
     }
 
     UMA_HISTOGRAM_ENUMERATION("Net.Prefetch.Pattern", status, STATUS_MAX);
   } else if (request_->response_info().unused_since_prefetch) {
     TimeDelta total_time = base::TimeTicks::Now() - request_->creation_time();
     UMA_HISTOGRAM_TIMES("Net.Prefetch.TimeSpentOnPrefetchHit", total_time);
   }
 }
 
 }  // namespace content