components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/ui/webui/ntp/suggestions_page_handler.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_WEBUI_NTP_SUGGESTIONS_PAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_SUGGESTIONS_PAGE_HANDLER_H_
 
 #include <string>
 
 #include "chrome/browser/common/cancelable_request.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/ui/webui/ntp/suggestions_combiner.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 class GURL;
 class PageUsageData;
-class PrefRegistrySyncable;
 
 namespace base {
 class ListValue;
 class Value;
 }
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 // The handler for Javascript messages related to the "suggestions" view.
 //
 // This class manages one preference:
 // - The URL blacklist: URLs we do not want to show in the thumbnails list.  It
 //   is a dictionary for quick access (it associates a dummy boolean to the URL
 //   string).
 class SuggestionsHandler : public content::WebUIMessageHandler,
                            public content::NotificationObserver,
                            public SuggestionsCombiner::Delegate {
  public:
@@ skipping 22 matching lines @@
   void HandleSuggestedSitesSelected(const base::ListValue* args);
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // SuggestionsCombiner::Delegate implementation.
   virtual void OnSuggestionsReady() OVERRIDE;
 
-  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
+  static void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
   // Puts the passed URL in the blacklist (so it does not show as a thumbnail).
   void BlacklistURL(const GURL& url);
 
   // Returns the key used in url_blacklist_ for the passed |url|.
   std::string GetDictionaryKeyForURL(const std::string& url);
 
   // Sends pages_value_ to the javascript side to and resets page_value_.
   void SendPagesValue();
@@ skipping 10 matching lines @@
   // Whether the user has viewed the 'suggested' pane.
   bool suggestions_viewed_;
 
   // Whether the user has performed a "tracked" action to leave the page or not.
   bool user_action_logged_;
 
   DISALLOW_COPY_AND_ASSIGN(SuggestionsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_SUGGESTIONS_PAGE_HANDLER_H_