[Sync] Move sync/{internal_api,syncable} into syncer namespace

sync/test/engine/syncer_command_test.h

 // Copyright (c) 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 SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_
 #define SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_
 #pragma once
 
 #include <algorithm>
 #include <string>
@@ skipping 193 matching lines @@
   FakeExtensionsActivityMonitor extensions_activity_monitor_;
   scoped_ptr<ThrottledDataTypeTracker> throttled_data_type_tracker_;
   TrafficRecorder traffic_recorder_;
   DISALLOW_COPY_AND_ASSIGN(SyncerCommandTestBase);
 };
 
 class SyncerCommandTest : public SyncerCommandTestBase {
  public:
   virtual void SetUp() OVERRIDE;
   virtual void TearDown() OVERRIDE;
-  virtual Directory* directory() OVERRIDE;
+  virtual syncable::Directory* directory() OVERRIDE;
 
  private:
   TestDirectorySetterUpper dir_maker_;
 };
 
 class MockDirectorySyncerCommandTest : public SyncerCommandTestBase {
  public:
   MockDirectorySyncerCommandTest();
   virtual ~MockDirectorySyncerCommandTest();
-  virtual Directory* directory() OVERRIDE;
+  virtual syncable::Directory* directory() OVERRIDE;
 
-  MockDirectory* mock_directory() {
-    return static_cast<MockDirectory*>(directory());
+  syncable::MockDirectory* mock_directory() {
+    return static_cast<syncable::MockDirectory*>(directory());
   }
 
   virtual void SetUp() OVERRIDE;
 
   TestUnrecoverableErrorHandler handler_;
-  MockDirectory mock_directory_;
+  syncable::MockDirectory mock_directory_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_