Rename ModelType/ObjectIdStateMap to InvalidationMap.

sync/internal_api/public/base/invalidation_state.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_BASE_INVALIDATION_STATE_H_
-#define SYNC_INTERNAL_API_PUBLIC_BASE_INVALIDATION_STATE_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-
-namespace base {
-class DictionaryValue;
-class Value;
-}  // namespace
-
-namespace syncer {
-
-// Opaque class that represents an ack handle.
-// TODO(dcheng): This is just a refactoring change, so the class is empty for
-// the moment. It will be filled once we start implementing 'reminders'.
-class AckHandle {
- public:
-  bool Equals(const AckHandle& other) const;
-
-  scoped_ptr<base::Value> ToValue() const;
-
-  bool ResetFromValue(const base::Value& value);
-};
-
-struct InvalidationState {
-  std::string payload;
-  AckHandle ack_handle;
-
-  bool Equals(const InvalidationState& other) const;
-
-  // Caller owns the returned DictionaryValue.
-  scoped_ptr<base::DictionaryValue> ToValue() const;
-
-  bool ResetFromValue(const base::DictionaryValue& value);
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_INTERNAL_API_PUBLIC_BASE_INVALIDATION_STATE_H_