Fix SyncManager initialization failure crash.

sync/internal_api/public/test/test_internal_components_factory.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_INTERNAL_API_PUBLIC_TEST_TEST_INTERNAL_COMPONENTS_FACTORY_H_
 #define SYNC_INTERNAL_API_PUBLIC_TEST_TEST_INTERNAL_COMPONENTS_FACTORY_H_
 
 #include "sync/internal_api/public/internal_components_factory.h"
 
 namespace syncer {
 
+enum StorageOption {
+  // BuildDirectoryBackingStore should not use persistent on-disk storage.
+  STORAGE_IN_MEMORY,
+  // Use this if you want BuildDirectoryBackingStore to create a real
+  // on disk store.
+  STORAGE_ON_DISK,
+  // Use this to test the case where a directory fails to load.
+  STORAGE_INVALID
+};
+
 class TestInternalComponentsFactory : public InternalComponentsFactory {
  public:
-  enum StorageOption {
-    // BuildDirectoryBackingStore should not use persistent on-disk storage.
-    IN_MEMORY,
-    // Use this if you want BuildDirectoryBackingStore to create a real
-    // on disk store.
-    ON_DISK
-  };
-
   explicit TestInternalComponentsFactory(StorageOption option);
   virtual ~TestInternalComponentsFactory();
 
   virtual scoped_ptr<SyncScheduler> BuildScheduler(
       const std::string& name,
       sessions::SyncSessionContext* context) OVERRIDE;
 
   virtual scoped_ptr<sessions::SyncSessionContext> BuildContext(
       ServerConnectionManager* connection_manager,
       syncable::Directory* directory,
@@ skipping 11 matching lines @@
 
  private:
   const StorageOption storage_option_;
 
   DISALLOW_COPY_AND_ASSIGN(TestInternalComponentsFactory);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_TEST_TEST_INTERNAL_COMPONENTS_FACTORY_H_