Revert of Delete base/prefs and update callers to use components.

ios/chrome/browser/browser_state/chrome_browser_state_io_data.h

 // Copyright 2015 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.
 
 #ifndef IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_
 #define IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/prefs/pref_member.h"
 #include "components/content_settings/core/common/content_settings_types.h"
-#include "components/prefs/pref_member.h"
 #include "ios/chrome/browser/ios_chrome_io_thread.h"
 #include "ios/chrome/browser/net/net_types.h"
 #include "net/cert/ct_verifier.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/http/http_cache.h"
 #include "net/http/http_network_session.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_interceptor.h"
 #include "net/url_request/url_request_job_factory.h"
 
@@ skipping 289 matching lines @@
 
   // TODO(jhawkins): Remove once crbug.com/102004 is fixed.
   bool initialized_on_UI_thread_;
 
   const ios::ChromeBrowserStateType browser_state_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserStateIOData);
 };
 
 #endif  // IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_