Add renderer histograms for late binding of sockets.

chrome/renderer/render_view.cc

 // Copyright (c) 2009 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 "chrome/renderer/render_view.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 2994 matching lines @@
         finish - start, kBeginToFinishMin,
         kBeginToFinishMax, kBeginToFinishBucketCount);
     if (!request.is_null())
       UMA_HISTOGRAM_CUSTOM_TIMES(
           FieldTrial::MakeName("Renderer4.RequestToFinish",
                                "GlobalSdch").data(),
           finish - request, kBeginToFinishMin,
           kBeginToFinishMax, kBeginToFinishBucketCount);
   }
 
+  static bool use_socket_late_binding_histogram =
+      FieldTrialList::Find("SocketLateBinding") &&
+      !FieldTrialList::Find("SocketLateBinding")->group_name().empty();
+  if (use_socket_late_binding_histogram) {
+    UMA_HISTOGRAM_CUSTOM_TIMES(
+        FieldTrial::MakeName("Renderer4.BeginToFinish",
+                             "SocketLateBinding").data(),
+        finish - begin, kBeginToFinishMin,
+        kBeginToFinishMax, kBeginToFinishBucketCount);
+    UMA_HISTOGRAM_CUSTOM_TIMES(
+        FieldTrial::MakeName("Renderer4.StartToFinish",
+                             "SocketLateBinding").data(),
+        finish - start, kBeginToFinishMin,
+        kBeginToFinishMax, kBeginToFinishBucketCount);
+    if (!request.is_null())
+      UMA_HISTOGRAM_CUSTOM_TIMES(
+          FieldTrial::MakeName("Renderer4.RequestToFinish",
+                               "SocketLateBinding").data(),
+          finish - request, kBeginToFinishMin,
+          kBeginToFinishMax, kBeginToFinishBucketCount);
+  }
+
   static bool use_cache_histogram1(FieldTrialList::Find("CacheSize") &&
       !FieldTrialList::Find("CacheSize")->group_name().empty());
   if (use_cache_histogram1)
     UMA_HISTOGRAM_CUSTOM_TIMES(
         FieldTrial::MakeName("Renderer4.StartToFinish", "CacheSize").data(),
         finish - start, kBeginToFinishMin,
         kBeginToFinishMax, kBeginToFinishBucketCount);
 
   static bool use_cache_histogram2(FieldTrialList::Find("NewEviction") &&
       !FieldTrialList::Find("NewEviction")->group_name().empty());
@@ skipping 73 matching lines @@
     Send(new ViewHostMsg_PasswordFormsSeen(routing_id_, password_forms));
 }
 
 void RenderView::Print(WebFrame* frame, bool script_initiated) {
   DCHECK(frame);
   if (print_helper_.get() == NULL) {
     print_helper_.reset(new PrintWebViewHelper(this));
   }
   print_helper_->Print(frame, script_initiated);
 }