[Sync] Fix namespaces for the sync_sessions component.

chrome/browser/sync/sessions/notification_service_sessions_router.h

 // Copyright 2014 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_SYNC_SESSIONS_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_
 
+#include <memory>
 #include <set>
 
 #include "base/callback_list.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/sync_sessions/sessions_sync_manager.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class GURL;
 class Profile;
 
 namespace content {
 class WebContents;
 }
 
 namespace sync_sessions {
+
 class SyncSessionsClient;
-}
-
-namespace browser_sync {
 
 // A SessionsSyncManager::LocalEventRouter that drives session sync via
 // the NotificationService.
 class NotificationServiceSessionsRouter
     : public LocalSessionEventRouter,
       public content::NotificationObserver {
  public:
   NotificationServiceSessionsRouter(
       Profile* profile,
-      sync_sessions::SyncSessionsClient* sessions_client_,
+      SyncSessionsClient* sessions_client_,
       const syncer::SyncableService::StartSyncFlare& flare);
   ~NotificationServiceSessionsRouter() override;
 
   // content::NotificationObserver implementation.
   // BrowserSessionProvider -> sync API model change application.
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // SessionsSyncManager::LocalEventRouter implementation.
@@ skipping 12 matching lines @@
   // (e.g. http://www.google.com) and the given icon URL (e.g.
   // http://www.google.com/favicon.ico) have changed. It is valid to call
   // OnFaviconsChanged() with non-empty |page_urls| and an empty |icon_url|
   // and vice versa.
   void OnFaviconsChanged(const std::set<GURL>& page_urls,
                          const GURL& icon_url);
 
   LocalSessionEventHandler* handler_;
   content::NotificationRegistrar registrar_;
   Profile* const profile_;
-  sync_sessions::SyncSessionsClient* const sessions_client_;
+  SyncSessionsClient* const sessions_client_;
   syncer::SyncableService::StartSyncFlare flare_;
 
   std::unique_ptr<base::CallbackList<void(const std::set<GURL>&,
                                           const GURL&)>::Subscription>
       favicon_changed_subscription_;
 
   base::WeakPtrFactory<NotificationServiceSessionsRouter> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationServiceSessionsRouter);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_sessions
 
 #endif  // CHROME_BROWSER_SYNC_SESSIONS_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_