Introduce //components/user_prefs, use to eliminate c/b/prefs dependency in Autofill.

chrome/browser/content_settings/host_content_settings_map.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/content_settings/host_content_settings_map.h"
 
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/content_settings/content_settings_custom_extension_provider.h"
 #include "chrome/browser/content_settings/content_settings_default_provider.h"
 #include "chrome/browser/content_settings/content_settings_details.h"
 #include "chrome/browser/content_settings/content_settings_internal_extension_provider.h"
 #include "chrome/browser/content_settings/content_settings_observable_provider.h"
 #include "chrome/browser/content_settings/content_settings_policy_provider.h"
 #include "chrome/browser/content_settings/content_settings_pref_provider.h"
 #include "chrome/browser/content_settings/content_settings_provider.h"
 #include "chrome/browser/content_settings/content_settings_rule.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/content_settings_pattern.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/common/constants.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_errors.h"
 #include "net/base/static_cookie_policy.h"
 
@@ skipping 552 matching lines @@
     HostContentSettingsMap::GetProviderTypeFromSource(
         const std::string& source) {
   for (size_t i = 0; i < arraysize(kProviderNames); ++i) {
     if (source == kProviderNames[i])
       return static_cast<ProviderType>(i);
   }
 
   NOTREACHED();
   return DEFAULT_PROVIDER;
 }