Protector histograms for default search provider change added.

chrome/browser/protector/base_setting_change.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/protector/base_setting_change.h"
 
 #include "base/logging.h"
 
 namespace protector {
 
 BaseSettingChange::BaseSettingChange()
     : protector_(NULL) {
 }
 
 BaseSettingChange::~BaseSettingChange() {
 }
 
 bool BaseSettingChange::Init(Protector* protector) {
   DCHECK(protector);
   protector_ = protector;
   return true;
 }
 
 void BaseSettingChange::Apply() {
 }
 
 void BaseSettingChange::Discard() {
 }
 
+void BaseSettingChange::Timeout() {
+}
+
 void BaseSettingChange::OnBeforeRemoved() {
 }
 
 }  // namespace protector