Add a global on/off switch for content settings and expose a toggle on the Website Settings options…

chrome/browser/ui/content_settings/content_setting_bubble_model.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/ui/content_settings/content_setting_bubble_model.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 338 matching lines @@
   bool setting_is_wildcard = false;
 
   if (content_type() == CONTENT_SETTINGS_TYPE_COOKIES) {
     CookieSettings* cookie_settings =
         CookieSettings::Factory::GetForProfile(profile()).get();
     setting = cookie_settings->GetCookieSetting(
         url, url, true, &setting_source);
   } else {
     SettingInfo info;
     HostContentSettingsMap* map = profile()->GetHostContentSettingsMap();
-    scoped_ptr<base::Value> value(map->GetWebsiteSetting(
-        url, url, content_type(), std::string(), &info));
+    scoped_ptr<base::Value> value =
+        map->GetWebsiteSetting(url, url, content_type(), std::string(), &info);
     setting = content_settings::ValueToContentSetting(value.get());
     setting_source = info.source;
     setting_is_wildcard =
         info.primary_pattern == ContentSettingsPattern::Wildcard() &&
         info.secondary_pattern == ContentSettingsPattern::Wildcard();
   }
 
   if (content_type() == CONTENT_SETTINGS_TYPE_PLUGINS &&
       setting == CONTENT_SETTING_ALLOW &&
       setting_is_wildcard) {
@@ skipping 951 matching lines @@
   if (type == content::NOTIFICATION_WEB_CONTENTS_DESTROYED) {
     DCHECK_EQ(web_contents_,
               content::Source<WebContents>(source).ptr());
     web_contents_ = NULL;
   } else {
     DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
     DCHECK_EQ(profile_, content::Source<Profile>(source).ptr());
     profile_ = NULL;
   }
 }