Adds histograms for casting feature of Video Player

ui/file_manager/video_player/js/video_player_scripts.js

 // 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.
 
 // The include directives are put into Javascript-style comments to prevent
 // parsing errors in non-flattened mode. The flattener still sees them.
 // Note that this makes the flattener to comment out the first line of the
 // included file but that's all right since any javascript file should start
 // with a copyright comment anyway.
 
 //<include src="error_util.js">
 
+//<include src="../../file_manager/foreground/js/metrics_base.js">
+//<include src="video_player_metrics.js">
+
 //<include src="../../../webui/resources/js/cr.js">
 //<include src="../../../webui/resources/js/load_time_data.js">
 
 //<include src="../../../webui/resources/js/event_tracker.js">
 
 //<include src="../../../webui/resources/js/cr/ui.js">
 //<include src="../../../webui/resources/js/cr/event_target.js">
 
 //<include src="../../../webui/resources/js/cr/ui/position_util.js">
 //<include src="../../../webui/resources/js/cr/ui/menu_item.js">
@@ skipping 16 matching lines @@
 //<include src="cast/media_manager.js">
 //<include src="cast/caster.js">
 
 //<include src="media_controls.js">
 
 //<include src="video_player.js">
 
 window.unload = unload;
 
 })();