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

chrome/browser/net/http_server_properties_manager.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/net/http_server_properties_manager.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 
 using content::BrowserThread;
 
 namespace chrome_browser_net {
 
 namespace {
 
@@ skipping 642 matching lines @@
     completion.Run();
 }
 
 void HttpServerPropertiesManager::OnHttpServerPropertiesChanged() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (!setting_prefs_)
     ScheduleUpdateCacheOnUI();
 }
 
 }  // namespace chrome_browser_net