Prerender at 99%. This will be the default from now on.

chrome/browser/prerender/prerender_field_trial.cc

 // Copyright (c) 2011 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/browser/prerender/prerender_field_trial.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 33 matching lines @@
       LOG(ERROR) << "Invalid --prerender option received on command line: "
                  << switch_value;
       LOG(ERROR) << "Disabling prerendering!";
     }
   }
 
   switch (prerender_option) {
     case PRERENDER_OPTION_AUTO: {
       const base::FieldTrial::Probability kPrefetchDivisor = 1000;
       const base::FieldTrial::Probability kYesPrefetchProbability = 0;
-      const base::FieldTrial::Probability kPrerenderExp1Probability = 400;
-      const base::FieldTrial::Probability kPrerenderControl1Probability = 100;
-      const base::FieldTrial::Probability kPrerenderExp2Probability = 400;
-      const base::FieldTrial::Probability kPrerenderControl2Probability = 100;
+      const base::FieldTrial::Probability kPrerenderExp1Probability = 495;
+      const base::FieldTrial::Probability kPrerenderControl1Probability = 5;
+      const base::FieldTrial::Probability kPrerenderExp2Probability = 495;
+      const base::FieldTrial::Probability kPrerenderControl2Probability = 5;
 
       scoped_refptr<base::FieldTrial> trial(
           new base::FieldTrial("Prefetch", kPrefetchDivisor,
                                "ContentPrefetchDisabled", 2012, 6, 30));
 
       const int kNoPrefetchGroup = trial->kDefaultGroupNumber;
       const int kYesPrefetchGroup =
           trial->AppendGroup("ContentPrefetchEnabled", kYesPrefetchProbability);
       const int kPrerenderExperiment1Group =
           trial->AppendGroup("ContentPrefetchPrerender1",
@@ skipping 45 matching lines @@
     default:
       NOTREACHED();
   }
 
   UMA_HISTOGRAM_ENUMERATION("Prerender.Sessions",
                             PrerenderManager::GetMode(),
                             PrerenderManager::PRERENDER_MODE_MAX);
 }
 
 }  // namespace prerender