[Sync] Move change-related methods out of SyncManager::Observer

chrome/browser/sync/test/null_directory_change_delegate.h

 // Copyright (c) 2011 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 CHROME_BROWSER_SYNC_TEST_NULL_DIRECTORY_CHANGE_DELEGATE_H_
 #define CHROME_BROWSER_SYNC_TEST_NULL_DIRECTORY_CHANGE_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/sync/syncable/directory_change_delegate.h"
 
 namespace syncable {
 
 // DirectoryChangeDelegate that does nothing in all delegate methods.
 class NullDirectoryChangeDelegate : public DirectoryChangeDelegate {
  public:
   virtual ~NullDirectoryChangeDelegate();
 
   virtual void HandleCalculateChangesChangeEventFromSyncApi(
-      const EntryKernelMutationMap& mutations,
+      const ImmutableWriteTransactionInfo& write_transaction_info,
       BaseTransaction* trans) OVERRIDE;
   virtual void HandleCalculateChangesChangeEventFromSyncer(
-      const EntryKernelMutationMap& mutations,
+      const ImmutableWriteTransactionInfo& write_transaction_info,
       BaseTransaction* trans) OVERRIDE;
   virtual ModelTypeBitSet HandleTransactionEndingChangeEvent(
+      const ImmutableWriteTransactionInfo& write_transaction_info,
       BaseTransaction* trans) OVERRIDE;
   virtual void HandleTransactionCompleteChangeEvent(
       const ModelTypeBitSet& models_with_changes) OVERRIDE;
 };
 
 }  // namespace syncable
 
 #endif  // CHROME_BROWSER_SYNC_TEST_NULL_DIRECTORY_CHANGE_DELEGATE_H_