Add ContentSettingsProvider Interface.

chrome/browser/content_settings/pref_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/pref_content_settings_provider.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/content_settings/content_settings_details.h"
 #include "chrome/browser/content_settings/content_settings_pattern.h"
@@ skipping 39 matching lines @@
       content_type == CONTENT_SETTINGS_TYPE_PLUGINS &&
       !CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableClickToPlay)) {
     return CONTENT_SETTING_BLOCK;
   }
   return setting;
 }
 
 }  // namespace
 
+namespace content_settings {
+
 PrefContentSettingsProvider::PrefContentSettingsProvider(Profile* profile)
     : profile_(profile),
       is_off_the_record_(profile_->IsOffTheRecord()),
       updating_preferences_(false) {
   PrefService* prefs = profile->GetPrefs();
 
   // Read global defaults.
   DCHECK_EQ(arraysize(kTypeNames),
             static_cast<size_t>(CONTENT_SETTINGS_NUM_TYPES));
   ReadDefaultSettings(true);
@@ skipping 184 matching lines @@
       NotificationType::CONTENT_SETTINGS_CHANGED,
       Source<HostContentSettingsMap>(profile_->GetHostContentSettingsMap()),
       Details<const ContentSettingsDetails>(&details));
 }
 
 
 // static
 void PrefContentSettingsProvider::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterDictionaryPref(prefs::kDefaultContentSettings);
 }
+
+}  // namespace content_settings