[Sync] Move ChangeRecord into its own file (change_record.{h,cc})

chrome/browser/sync/glue/password_change_processor.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_GLUE_PASSWORD_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_PASSWORD_CHANGE_PROCESSOR_H_
 #pragma once
 
 #include "chrome/browser/sync/glue/change_processor.h"
 
@@ skipping 27 matching lines @@
 
   // NotificationObserver implementation.
   // Passwords -> sync_api model change application.
   virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details) OVERRIDE;
 
   // sync_api model -> WebDataService change application.
   virtual void ApplyChangesFromSyncModel(
       const sync_api::BaseTransaction* trans,
-      const sync_api::SyncManager::ChangeRecord* changes,
-      int change_count) OVERRIDE;
+      const sync_api::ImmutableChangeRecordList& changes) OVERRIDE;
 
   // Commit changes buffered during ApplyChanges. We must commit them to the
   // password store only after the sync_api transaction is released, else there
   // is risk of deadlock due to the password store posting tasks to the UI
   // thread (http://crbug.com/70658).
   virtual void CommitChangesFromSyncModel() OVERRIDE;
 
  protected:
   virtual void StartImpl(Profile* profile) OVERRIDE;
   virtual void StopImpl() OVERRIDE;
@@ skipping 21 matching lines @@
   bool observing_;
 
   MessageLoop* expected_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordChangeProcessor);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_PASSWORD_CHANGE_PROCESSOR_H_