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

chrome/browser/net/net_pref_observer.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/net_pref_observer.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/net/predictor.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prerender/prerender_manager.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 "net/http/http_stream_factory.h"
 
 using content::BrowserThread;
 
 NetPrefObserver::NetPrefObserver(PrefService* prefs,
                                  prerender::PrerenderManager* prerender_manager,
                                  chrome_browser_net::Predictor* predictor)
     : prerender_manager_(prerender_manager),
       predictor_(predictor) {
@@ skipping 26 matching lines @@
 
 // static
 void NetPrefObserver::RegisterUserPrefs(PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(prefs::kNetworkPredictionEnabled,
                                 true,
                                 PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(prefs::kDisableSpdy,
                                 false,
                                 PrefRegistrySyncable::UNSYNCABLE_PREF);
 }