[Sync] Fix namespaces for the sync_sessions component.

components/sync_sessions/synced_session.h

 // Copyright 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 COMPONENTS_SYNC_SESSIONS_SYNCED_SESSION_H_
 #define COMPONENTS_SYNC_SESSIONS_SYNCED_SESSION_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "components/sessions/core/session_id.h"
 #include "components/sessions/core/session_types.h"
 #include "components/sync/protocol/session_specifics.pb.h"
 
 namespace sessions {
 struct SessionWindow;
 }
 
-namespace sync_driver {
+namespace sync_sessions {
 
 // Defines a synced session for use by session sync. A synced session is a
 // list of windows along with a unique session identifer (tag) and meta-data
 // about the device being synced.
 struct SyncedSession {
   typedef std::map<SessionID::id_type, sessions::SessionWindow*>
       SyncedWindowMap;
 
   // The type of device.
   // Please keep in sync with ForeignSessionHelper.java
@@ skipping 63 matching lines @@
   }
 
   // Convert this object to its protocol buffer equivalent. Shallow conversion,
   // does not create SessionTab protobufs.
   sync_pb::SessionHeader ToSessionHeader() const;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncedSession);
 };
 
-}  // namespace sync_driver
+}  // namespace sync_sessions
 
 #endif  // COMPONENTS_SYNC_SESSIONS_SYNCED_SESSION_H_