Revert 146170 - Adding a field trial to enable speculative resource prefetching learning.

chrome/browser/predictors/resource_prefetch_predictor_factory.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/predictors/resource_prefetch_predictor_factory.h"
 
 #include "chrome/browser/predictors/predictor_database_factory.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
@@ skipping 19 matching lines @@
   // TODO(shishir): Uncomment this when crbug.com/97804 is fixed.
   // DependsOn(HistoryServiceFactory::GetInstance());
   DependsOn(PredictorDatabaseFactory::GetInstance());
 }
 
 ResourcePrefetchPredictorFactory::~ResourcePrefetchPredictorFactory() {}
 
 ProfileKeyedService*
     ResourcePrefetchPredictorFactory::BuildServiceInstanceFor(
         Profile* profile) const {
-  return ResourcePrefetchPredictor::IsEnabled(profile) ?
+  return ResourcePrefetchPredictor::IsEnabled() ?
           new ResourcePrefetchPredictor(ResourcePrefetchPredictor::Config(),
                                         profile) :
           NULL;
 }
 
 }  // namespace predictors