[Sync] Move //components/sync to the syncer namespace.

components/sync/driver/data_type_encryption_handler.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 COMPONENTS_SYNC_DRIVER_DATA_TYPE_ENCRYPTION_HANDLER_H_
 #define COMPONENTS_SYNC_DRIVER_DATA_TYPE_ENCRYPTION_HANDLER_H_
 
 #include "components/sync/base/model_type.h"
 
-namespace sync_driver {
+namespace syncer {
 
 // The DataTypeEncryptionHandler provides the status of datatype encryption.
 class DataTypeEncryptionHandler {
  public:
   DataTypeEncryptionHandler();
   virtual ~DataTypeEncryptionHandler();
 
   // Returns true if a passphrase is required for encryption to proceed, false
   // otherwise.
   virtual bool IsPassphraseRequired() const = 0;
 
   // Returns the current set of encrypted data types.
-  virtual syncer::ModelTypeSet GetEncryptedDataTypes() const = 0;
+  virtual ModelTypeSet GetEncryptedDataTypes() const = 0;
 };
 
-}  // namespace sync_driver
+}  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_DRIVER_DATA_TYPE_ENCRYPTION_HANDLER_H_