chrome.displaySource custom bindings

extensions/renderer/api/display_source/display_source_session.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 "extensions/renderer/api/display_source/display_source_session.h"
+
+namespace extensions {
+
+DisplaySourceSession::DisplaySourceSession()
+  : state_(Idle) {
+}
+
+DisplaySourceSession::~DisplaySourceSession() {
+}
+
+void DisplaySourceSession::SetCallbacks(
+    const SinkIdCallback& started_callback,
+    const SinkIdCallback& terminated_callback,
+    const ErrorCallback& error_callback) {
+  DCHECK(started_callback_.is_null());
+  DCHECK(terminated_callback_.is_null());
+  DCHECK(error_callback_.is_null());
+
+  started_callback_ = started_callback;
+  terminated_callback_ = terminated_callback;
+  error_callback_ = error_callback;
+}
+
+scoped_ptr<DisplaySourceSession> DisplaySourceSessionFactory::CreateSession(
+    int sink_id,
+    const blink::WebMediaStreamTrack& video_track,
+    const blink::WebMediaStreamTrack& audio_track,
+    scoped_ptr<DisplaySourceAuthInfo> auth_info) {
+  return nullptr;
+}
+
+}  // namespace extensions