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

chrome/browser/ui/gtk/browser_window_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 17 matching lines @@
 class Browser;
 class BrowserTitlebarBase;
 class BrowserToolbarGtk;
 class DownloadShelfGtk;
 class ExtensionKeybindingRegistryGtk;
 class FindBarGtk;
 class FullscreenExitBubbleGtk;
 class GlobalMenuBar;
 class InfoBarContainerGtk;
 class LocationBar;
+class PrefService;
 class StatusBubbleGtk;
 class TabContentsContainerGtk;
 class TabStripGtk;
 
 namespace autofill {
 class PasswordGenerator;
 }
 
 namespace extensions {
 class Extension;
@@ skipping 513 matching lines @@
   scoped_ptr<FullscreenExitBubbleGtk> fullscreen_exit_bubble_;
 
   FullscreenExitBubbleType fullscreen_exit_bubble_type_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_