Video Player: Add a message which is shown on casting

ui/file_manager/video_player/js/cast/cast_video_element.js

Index: ui/file_manager/video_player/js/cast/cast_video_element.js
diff --git a/ui/file_manager/video_player/js/cast/cast_video_element.js b/ui/file_manager/video_player/js/cast/cast_video_element.js
new file mode 100644
index 0000000000000000000000000000000000000000..299fa2bb5d3f1c3740861a3e1ff6379eae9091b6
--- /dev/null
+++ b/ui/file_manager/video_player/js/cast/cast_video_element.js
@@ -0,0 +1,114 @@
+// Copyright 2014 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.
+
+'use strict';
+
+/**
+ * This class is the dummy class which has same interface as VideoElement. This
+ * behaves like VideoElement, and is used for making Chromecast player
+ * controlled instead of the true Video Element tag.
+ *
+ * @constructor
+ */
+function CastVideoElement() {
+  this.duration_ = null;
+  this.currentTime_ = null;
+  this.src_ = '';
+  this.volume_ = 100;
+}
+
+CastVideoElement.prototype = {
+  __proto__: cr.EventTarget.prototype,
+
+  /**
+   * Returns a parent node. This must always be null.
+   * @return {Element}
+   */
+  get parentNode() {
+    return null;
+  },
+
+  /**
+   * The total time of the video.
+   * @type {number}
+   */
+  get duration() {
+    return this.duration_;
+  },
+
+  /**
+   * The current timestamp of the video.
+   * @type {number}
+   */
+  get currentTime() {
+    return this.currentTime_;
+  },
+  set currentTime(currentTime) {
+    this.currentTime_ = currentTime;
+  },
+
+  /**
+   * If this video is pauses or not.
+   * @type {boolean}
+   */
+  get paused() {
+    return false;
+  },
+
+  /**
+   * If this video is ended or not.
+   * @type {boolean}
+   */
+  get ended() {
+    return false;
+  },
+
+  /**
+   * If this video is seelable or not.
+   * @type {boolean}
+   */
+  get seekable() {
+    return false;
+  },
+
+  /**
+   * Value of the volume
+   * @type {number}
+   */
+  get volume() {
+    return this.volume_;
+  },
+  set volume(volume) {
+    this.volume_ = volume;
+  },
+
+  /**
+   * Returns the source of the current video.
+   * @return {string}
+   */
+  get src() {
+    return this.src_;
+  },
+
+  /**
+   * Plays the video.
+   */
+  play: function() {
+    // TODO(yoshiki): Implement this.
+  },
+
+  /**
+   * Pauses the video.
+   */
+  pause: function() {
+    // TODO(yoshiki): Implement this.
+  },
+
+  /**
+   * Loads the video.
+   */
+  load: function() {
+    // TODO(yoshiki): Implement this.
+  },
+};