Increase omnibox prerender field trial opt-in from 40% to 90%.

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 149 matching lines @@
                             PrerenderManager::GetMode(),
                             PrerenderManager::PRERENDER_MODE_MAX);
 
   ConfigurePrerenderFromOmnibox();
 }
 
 void ConfigurePrerenderFromOmnibox() {
   // Field trial to see if we're enabled.
   const base::FieldTrial::Probability kDivisor = 100;
 
-  const base::FieldTrial::Probability kEnabledProbability = 40;
+  const base::FieldTrial::Probability kEnabledProbability = 90;
   scoped_refptr<base::FieldTrial> enabled_trial(
       new base::FieldTrial(kPrerenderFromOmniboxTrialName, kDivisor,
                            "OmniboxPrerenderDisabled", 2012, 8, 30));
   enabled_trial->AppendGroup("OmniboxPrerenderEnabled", kEnabledProbability);
 
   // Field trial to see which heuristic to use.
   const base::FieldTrial::Probability kExactFullProbability = 50;
   scoped_refptr<base::FieldTrial> heuristic_trial(
       new base::FieldTrial(kPrerenderFromOmniboxHeuristicTrialName, kDivisor,
                            "OriginalAlgorithm", 2012, 8, 30));
@@ skipping 44 matching lines @@
 
   // If we don't have a group just return the exact heuristic.
   return OMNIBOX_HEURISTIC_EXACT;
 }
 
 std::string GetOmniboxHistogramSuffix() {
   return NameFromOmniboxHeuristic(prerender::GetOmniboxHeuristicToUse());
 }
 
 }  // namespace prerender