Implements ListenForSessionMessages in PresentationServiceImpl; uses Swap to avoid copying large da…

content/public/browser/presentation_session_message.cc

+// Copyright 2015 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 "content/public/browser/presentation_session_message.h"
+
+namespace content {
+
+PresentationSessionMessage::PresentationSessionMessage(
+    const std::string& presentation_url,
+    const std::string& presentation_id,
+    scoped_ptr<std::string> message)
+    : presentation_url(presentation_url),
+      presentation_id(presentation_id),
+      message(message.Pass()),
+      data(nullptr) {
+}
+
+PresentationSessionMessage::PresentationSessionMessage(
+    const std::string& presentation_url,
+    const std::string& presentation_id,
+    scoped_ptr<std::vector<uint8_t>> data)
+    : presentation_url(presentation_url),
+      presentation_id(presentation_id),
+      message(nullptr),
+      data(data.Pass()) {
+}
+
+// static
+scoped_ptr<PresentationSessionMessage>
+PresentationSessionMessage::CreateStringMessage(
+    const std::string& presentation_url,
+    const std::string& presentation_id,
+    scoped_ptr<std::string> message) {
+  return scoped_ptr<PresentationSessionMessage>(new PresentationSessionMessage(
+      presentation_url, presentation_id, message.Pass()));
+}
+
+// static
+scoped_ptr<PresentationSessionMessage>
+PresentationSessionMessage::CreateBinaryMessage(
+    const std::string& presentation_url,
+    const std::string& presentation_id,
+    scoped_ptr<std::vector<uint8_t>> data) {
+  return scoped_ptr<PresentationSessionMessage>(new PresentationSessionMessage(
+      presentation_url, presentation_id, data.Pass()));
+}
+
+bool PresentationSessionMessage::is_binary() const {
+  return data != nullptr;
+}
+
+PresentationSessionMessage::~PresentationSessionMessage() {
+}
+
+}  // namespace content