Extract PrefServiceBase into chrome/browser/api. Use in api and autofill.

chrome/browser/spellchecker/spellcheck_host.cc

 // Copyright (c) 2011 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/spellchecker/spellcheck_host.h"
 
 #include "base/string_split.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/api/prefs/pref_member.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/spellchecker/spellcheck_host_impl.h"
 #include "chrome/browser/spellchecker/spellcheck_platform_mac.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/spellcheck_common.h"
 
 using content::BrowserThread;
 
 namespace {
 
@@ skipping 85 matching lines @@
 }
 
 // static
 SpellCheckHost::EventType SpellCheckHost::WaitStatusEvent() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   if (g_status_event)
     g_status_event->Wait();
   return g_status_type;
 }