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diff --git a/Firestore/core/include/firebase/firestore/listener_registration.h b/Firestore/core/include/firebase/firestore/listener_registration.h
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+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_LISTENER_REGISTRATION_H_
+#define FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_LISTENER_REGISTRATION_H_
+
+namespace firebase {
+namespace firestore {
+
+class FirestoreInternal;
+class ListenerRegistrationInternal;
+
+/** Represents a listener that can be removed by calling remove. */
+class ListenerRegistration {
+ public:
+  /**
+   * @brief Default constructor. This creates a no-op instance.
+   */
+  ListenerRegistration();
+
+  /**
+   * @brief Copy constructor. It's totally okay to copy ListenerRegistration
+   * instances.
+   *
+   * @param[in] registration ListenerRegistration to copy from.
+   */
+  ListenerRegistration(const ListenerRegistration& registration);
+
+  /**
+   * @brief Move constructor. Moving is an efficient operation for
+   * ListenerRegistration instances.
+   *
+   * @param[in] registration ListenerRegistration to move data from.
+   */
+  ListenerRegistration(ListenerRegistration&& registration);
+
+  ~ListenerRegistration();
+
+  /**
+   * @brief Copy assignment operator. It's totally okay to copy
+   * ListenerRegistration instances.
+   *
+   * @param[in] registration ListenerRegistration to copy from.
+   *
+   * @returns Reference to the destination ListenerRegistration.
+   */
+  ListenerRegistration& operator=(const ListenerRegistration& registration);
+
+  /**
+   * @brief Move assignment operator. Moving is an efficient operation for
+   * ListenerRegistration instances.
+   *
+   * @param[in] registration ListenerRegistration to move data from.
+   *
+   * @returns Reference to the destination ListenerRegistration.
+   */
+  ListenerRegistration& operator=(ListenerRegistration&& registration);
+
+  /**
+   * Removes the listener being tracked by this ListenerRegistration. After the
+   * initial call, subsequent calls have no effect.
+   */
+  void Remove();
+
+ private:
+  friend class DocumentReferenceInternal;
+  friend class ListenerRegistrationInternal;
+  friend class FirestoreInternal;
+
+  explicit ListenerRegistration(ListenerRegistrationInternal* internal);
+
+  FirestoreInternal* firestore_ = nullptr;
+  ListenerRegistrationInternal* internal_ = nullptr;
+};
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_LISTENER_REGISTRATION_H_