Implement WiFi Display transport stream packetizer.

extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.cc

Index: extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.cc
diff --git a/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.cc b/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2c84885db87bdebb6e52d6af0e92a15ddff7fe1f
--- /dev/null
+++ b/extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.cc
@@ -0,0 +1,46 @@
+// Copyright 2016 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 "extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_info.h"
+
+#include <utility>
+
+namespace extensions {
+
+WiFiDisplayElementaryStreamInfo::WiFiDisplayElementaryStreamInfo(
+    ElementaryStreamType type)
+    : type_(type) {}
+
+WiFiDisplayElementaryStreamInfo::WiFiDisplayElementaryStreamInfo(
+    ElementaryStreamType type,
+    DescriptorVector descriptors)
+    : descriptors_(std::move(descriptors)), type_(type) {}
+
+WiFiDisplayElementaryStreamInfo::WiFiDisplayElementaryStreamInfo(
+    const WiFiDisplayElementaryStreamInfo&) = default;
+
+WiFiDisplayElementaryStreamInfo::WiFiDisplayElementaryStreamInfo(
+    WiFiDisplayElementaryStreamInfo&&) = default;
+
+WiFiDisplayElementaryStreamInfo::~WiFiDisplayElementaryStreamInfo() {}
+
+WiFiDisplayElementaryStreamInfo& WiFiDisplayElementaryStreamInfo::operator=(
+    WiFiDisplayElementaryStreamInfo&&) = default;
+
+void WiFiDisplayElementaryStreamInfo::AddDescriptor(
+    WiFiDisplayElementaryStreamDescriptor descriptor) {
+  descriptors_.emplace_back(std::move(descriptor));
+}
+
+const WiFiDisplayElementaryStreamDescriptor*
+WiFiDisplayElementaryStreamInfo::FindDescriptor(
+    DescriptorTag descriptor_tag) const {
+  for (const auto& descriptor : descriptors()) {
+    if (descriptor.tag() == descriptor_tag)
+      return &descriptor;
+  }
+  return nullptr;
+}
+
+}  // namespace extensions