[Sync] Fix namespaces for the sync_sessions component.

components/sync_sessions/session_sync_test_helper.h

 // Copyright 2013 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_GLUE_SESSION_SYNC_TEST_HELPER_H_
-#define CHROME_BROWSER_SYNC_GLUE_SESSION_SYNC_TEST_HELPER_H_
+#ifndef COMPONENTS_SYNC_SESSIONS_SESSION_SYNC_TEST_HELPER_H_
+#define COMPONENTS_SYNC_SESSIONS_SESSION_SYNC_TEST_HELPER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "components/sessions/core/session_id.h"
 
-namespace sync_driver {
-struct SyncedSession;
-}
-
 namespace sync_pb {
 class SessionSpecifics;
 }
 
-namespace browser_sync {
+namespace sync_sessions {
+
+struct SyncedSession;
 
 class SessionSyncTestHelper {
  public:
   SessionSyncTestHelper() : max_tab_node_id_(0) {}
 
   static void BuildSessionSpecifics(const std::string& tag,
                                     sync_pb::SessionSpecifics* meta);
 
   static void AddWindowSpecifics(int window_id,
                                  const std::vector<int>& tab_list,
                                  sync_pb::SessionSpecifics* meta);
 
   static void VerifySyncedSession(
       const std::string& tag,
       const std::vector<std::vector<SessionID::id_type>>& windows,
-      const sync_driver::SyncedSession& session);
+      const SyncedSession& session);
 
   // Build a SessionSpecifics object with a tab and sample data. Uses a
   // monotonically increasing variable to generate tab_node_ids and avoid
   // conflicts.
   void BuildTabSpecifics(const std::string& tag,
                          int window_id,
                          int tab_id,
                          sync_pb::SessionSpecifics* tab_base);
 
   // Overload of BuildTabSpecifics to allow forcing a specific tab_node_id.
@@ skipping 10 matching lines @@
       std::vector<sync_pb::SessionSpecifics>* tabs);
 
   void Reset();
 
  private:
   int max_tab_node_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionSyncTestHelper);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_sessions
 
-#endif  // CHROME_BROWSER_SYNC_GLUE_SESSION_SYNC_TEST_HELPER_H_
+#endif  // COMPONENTS_SYNC_SESSIONS_SESSION_SYNC_TEST_HELPER_H_