EME: Close existing sessions on CDM failure

media/test/data/eme_player_js/clearkey_player.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.
 
 // ClearKeyPlayer responsible for playing media using Clear Key key system.
 function ClearKeyPlayer(video, testConfig) {
   this.video = video;
   this.testConfig = testConfig;
 }
 
 ClearKeyPlayer.prototype.init = function() {
   // Returns a promise.
   return PlayerUtils.initEMEPlayer(this);
 };
 
 ClearKeyPlayer.prototype.registerEventListeners = function() {
   // Returns a promise.
   return PlayerUtils.registerEMEEventListeners(this);
 };
 
 ClearKeyPlayer.prototype.onMessage = function(message) {
   Utils.timeLog('MediaKeySession onMessage', message);
   var keyId = Utils.extractFirstLicenseKeyId(message.message);
   var key = Utils.getDefaultKey(this.testConfig.forceInvalidResponse);
   var jwkSet = Utils.createJWKData(keyId, key);
   Utils.timeLog('Calling update: ' + String.fromCharCode.apply(null, jwkSet));
   message.target.update(jwkSet).catch(function(error) {
-    // Ignore the error if a crash is expected. This ensures that the decoder
-    // actually detects and reports the error.
-    if (this.testConfig.keySystem != 'org.chromium.externalclearkey.crash') {
+    // If a crash is expected, wait for the session to be closed.
+    if (this.testConfig.keySystem == 'org.chromium.externalclearkey.crash') {
+      message.target.closed.then(
+          function(result) { Utils.setResultInTitle('SESSION_CLOSED'); },
+          function(error) { Utils.failTest(error); });
+    } else {
+      // Failure unexpected.
       Utils.failTest(error, EME_UPDATE_FAILED);
     }
   });
 };