Changing SpawnChild to return a struct.

base/android/parcelable_channel_server.cc

+// 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.
+
+#include "base/android/parcelable_channel_server.h"
+
+#include "jni/ParcelableChannelServer_jni.h"
+
+namespace base {
+namespace android {
+
+ParcelableChannelServer::ParcelableChannelServer() {}
+
+ParcelableChannelServer::ParcelableChannelServer(
+    const base::android::JavaRef<jobject>& j_parcelable_channel)
+    : j_parcelable_channel_(j_parcelable_channel) {
+  DCHECK(!j_parcelable_channel_.is_null());
+}
+
+ParcelableChannelServer::ParcelableChannelServer(
+    ParcelableChannelServer&& other)
+    : j_parcelable_channel_(std::move(other.j_parcelable_channel_)) {}
+
+ParcelableChannelServer& ParcelableChannelServer::operator=(
+    ParcelableChannelServer&& other) {
+  j_parcelable_channel_ = std::move(other.j_parcelable_channel_);
+  return *this;
+}
+
+base::android::ScopedJavaLocalRef<jobject>
+ParcelableChannelServer::TakeParcelable(uint32_t id) {
+  DCHECK(!j_parcelable_channel_.is_null());
+
+  return Java_ParcelableChannelServer_takeParcelable(
+      base::android::AttachCurrentThread(), j_parcelable_channel_, id);
+}
+
+}  // namespace android
+}  // namespace base