Created SerializableUserDataManager.

ios/web/navigation/serializable_user_data_manager_impl.h

+// Copyright 2017 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 IOS_WEB_NAVIGATION_SERIALIZABLE_USER_DATA_MANAGER_IMPL_H_
+#define IOS_WEB_NAVIGATION_SERIALIZABLE_USER_DATA_MANAGER_IMPL_H_
+
+#import "base/mac/scoped_nsobject.h"
+#import "ios/web/public/serializable_user_data_manager.h"
+
+namespace web {
+
+class SerializableUserDataImpl : public SerializableUserData {
+ public:
+  SerializableUserDataImpl();
+  ~SerializableUserDataImpl();
+
+  // Constructor taking the NSDictionary holding the serializable data.
+  explicit SerializableUserDataImpl(NSDictionary* data);
+
+  // SerializableUserData:
+  void Encode(NSCoder* coder) override;
+  void Decode(NSCoder* coder) override;
+
+  // Returns the serializable data.
+  NSDictionary* data() { return data_; };
+
+ private:
+  // The dictionary passed on initialization.  After calling Decode(), this will
+  // contain the data that is decoded from the NSCoder.
+  base::scoped_nsobject<NSDictionary> data_;
+};
+
+class SerializableUserDataManagerImpl : public SerializableUserDataManager {
+ public:
+  SerializableUserDataManagerImpl();
+  ~SerializableUserDataManagerImpl();
+
+  // SerializableUserDataManager:
+  void AddSerializableData(id<NSCoding> data, NSString* key) override;
+  id<NSCoding> GetValueForSerializationKey(NSString* key) override;
+  std::unique_ptr<SerializableUserData> CreateSerializableUserData()
+      const override;
+  void AddSerializableUserData(SerializableUserData* data) override;
+
+ private:
+  // The dictionary that stores serializable user data.
+  base::scoped_nsobject<NSMutableDictionary> data_;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_NAVIGATION_SERIALIZABLE_USER_DATA_MANAGER_IMPL_H_