Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/prerender/prerender_field_trial.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 "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"
+#include "base/prefs/pref_service.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "chrome/browser/predictors/autocomplete_action_predictor.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 
 using base::FieldTrial;
 using base::FieldTrialList;
 
 namespace prerender {
 
@@ skipping 220 matching lines @@
   return group == FieldTrial::kNotFinalized ||
          group == g_omnibox_trial_default_group_number;
 }
 
 bool IsLocalPredictorEnabled() {
   return base::FieldTrialList::FindFullName(kLocalPredictorTrialName) ==
       kLocalPredictorEnabledGroup;
 }
 
 }  // namespace prerender