Implement preference and policy based content settings providers.

chrome/browser/content_settings/mock_content_settings_provider.cc

 // Copyright (c) 2010 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/content_settings/mock_content_settings_provider.h"
 
 MockContentSettingsProvider::MockContentSettingsProvider(
     ContentSettingsType content_type,
     ContentSetting setting,
     bool is_managed,
     bool can_override)
     : content_type_(content_type),
       setting_(setting),
       is_managed_(is_managed),
       can_override_(can_override) {
 }
 
 MockContentSettingsProvider::~MockContentSettingsProvider() {
 }
 
 bool MockContentSettingsProvider::CanProvideDefaultSetting(
-    ContentSettingsType content_type) {
+    ContentSettingsType content_type) const {
   return content_type == content_type_;
 }
 
 ContentSetting MockContentSettingsProvider::ProvideDefaultSetting(
-    ContentSettingsType content_type) {
+    ContentSettingsType content_type) const {
   return content_type == content_type_ ? setting_ : CONTENT_SETTING_DEFAULT;
 }
 
 void MockContentSettingsProvider::UpdateDefaultSetting(
     ContentSettingsType content_type,
     ContentSetting setting) {
   if (can_override_ && content_type == content_type_)
     setting_ = setting;
 }
 
 bool MockContentSettingsProvider::DefaultSettingIsManaged(
-    ContentSettingsType content_type) {
+    ContentSettingsType content_type) const {
   return content_type == content_type_ && is_managed_;
 }
+
+void MockContentSettingsProvider::ResetToDefaults() {
+}