Don't clear the net predictors prefs on startup

chrome/browser/browsing_data/browsing_data_remover.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/browsing_data/browsing_data_remover.h"
 
 #include <map>
 #include <set>
 #include <string>
 
@@ skipping 465 matching lines @@
     }
     if (profile_->GetNetworkPredictor()) {
       // TODO(dmurph): Support all backends with filter (crbug.com/113621).
       waiting_for_clear_network_predictor_ = true;
       BrowserThread::PostTaskAndReply(
           BrowserThread::IO, FROM_HERE,
           base::Bind(&ClearNetworkPredictorOnIOThread,
                      profile_->GetNetworkPredictor()),
           base::Bind(&BrowsingDataRemover::OnClearedNetworkPredictor,
                      weak_ptr_factory_.GetWeakPtr()));
+      profile_->GetNetworkPredictor()->ClearPrefsOnUIThread();
     }
 
     // As part of history deletion we also delete the auto-generated keywords.
     TemplateURLService* keywords_model =
         TemplateURLServiceFactory::GetForProfile(profile_);
 
     if (keywords_model && !keywords_model->loaded()) {
       template_url_sub_ = keywords_model->RegisterOnLoadedCallback(
           base::Bind(&BrowsingDataRemover::OnKeywordsLoaded,
                      weak_ptr_factory_.GetWeakPtr()));
@@ skipping 840 matching lines @@
   waiting_for_clear_domain_reliability_monitor_ = false;
   NotifyIfDone();
 }
 
 // static
 BrowsingDataRemover::CallbackSubscription
     BrowsingDataRemover::RegisterOnBrowsingDataRemovedCallback(
         const BrowsingDataRemover::Callback& callback) {
   return GetOnBrowsingDataRemovedCallbacks()->Add(callback);
 }