move V2 classes in chrome/engine to syncer_v2 namespace

sync/engine/model_type_entity.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 SYNC_ENGINE_MODEL_TYPE_ENTITY_H_
 #define SYNC_ENGINE_MODEL_TYPE_ENTITY_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "sync/base/sync_export.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace syncer_v2 {
 struct CommitRequestData;
-}  // namespace syncer_v2
-
-namespace syncer {
 
 // This is the model thread's representation of a SyncEntity.
 //
 // The model type entity receives updates from the model itself and
 // (asynchronously) from the sync server via the sync thread.  From the point
 // of view of this class, updates from the server take precedence over local
 // changes, though the model may be given an opportunity to overwrite this
 // decision later.
 //
 // Sync will try to commit this entity's data to the sync server and local
@@ skipping 62 matching lines @@
   // Schedule a commit if the |name| does not match this item's last known
   // encryption key.  The worker that performs the commit is expected to
   // encrypt the item using the latest available key.
   void UpdateDesiredEncryptionKey(const std::string& name);
 
   // Applies a local deletion to this item.
   void Delete();
 
   // Initializes a message representing this item's uncommitted state
   // to be forwarded to the sync server for committing.
-  void InitializeCommitRequestData(syncer_v2::CommitRequestData* request) const;
+  void InitializeCommitRequestData(CommitRequestData* request) const;
 
   // Notes that the current version of this item has been queued for commit.
   void SetCommitRequestInProgress();
 
   // Receives a successful commit response.
   //
   // Sucssful commit responses can overwrite an item's ID.
   //
   // Note that the receipt of a successful commit response does not necessarily
   // unset IsUnsynced().  If many local changes occur in quick succession, it's
@@ skipping 86 matching lines @@
   base::Time mtime_;
 
   // The name of the encryption key used to encrypt this item on the server.
   // Empty when no encryption is in use.
   std::string encryption_key_name_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_MODEL_TYPE_ENTITY_H_