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      1 <!DOCTYPE html>
      2 <!--
      3 Copyright (c) 2013 The Chromium Authors. All rights reserved.
      4 Use of this source code is governed by a BSD-style license that can be
      5 found in the LICENSE file.
      6 -->
      7 
      8 <link rel="import" href="/tracing/base/base.html">
      9 <link rel="import" href="/tracing/model/object_instance.html">
     10 
     11 <script>
     12 'use strict';
     13 
     14 tr.exportTo('tr.e.gpu', function() {
     15   var ObjectSnapshot = tr.model.ObjectSnapshot;
     16 
     17   /**
     18    * @constructor
     19    */
     20   function StateSnapshot() {
     21     ObjectSnapshot.apply(this, arguments);
     22   }
     23 
     24   StateSnapshot.prototype = {
     25     __proto__: ObjectSnapshot.prototype,
     26 
     27     preInitialize: function() {
     28       this.screenshot_ = undefined;
     29     },
     30 
     31     initialize: function() {
     32       if (this.args.screenshot)
     33         this.screenshot_ = this.args.screenshot;
     34     },
     35 
     36     /**
     37      * @return {String} a base64 encoded screenshot if available.
     38      */
     39     get screenshot() {
     40       return this.screenshot_;
     41     }
     42   };
     43 
     44   ObjectSnapshot.register(
     45     StateSnapshot,
     46     {typeName: 'gpu::State'});
     47 
     48   return {
     49     StateSnapshot: StateSnapshot
     50   };
     51 });
     52 </script>
     53