Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/playback-persistent-usage-record-events.js

+function runTest(config,qualifier) {
+
+    var testname = testnamePrefix(qualifier, config.keysystem)
+                                    + ', persistent-usage-record, '
+                                    + /video\/([^;]*)/.exec(config.videoType)[1]
+                                    + ', playback, check events';
+
+    var configuration = {   initDataTypes: [config.initDataType ],
+                            audioCapabilities: [{contentType: config.audioType}],
+                            videoCapabilities: [{contentType: config.videoType}],
+                            sessionTypes: ['persistent-usage-record']};
+
+
+    async_test(function(test) {
+        var _video = config.video,
+            _mediaKeys,
+            _mediaKeySession,
+            _sessionId,
+            _timeupdateEvent = false,
+            _events = [ ];
+
+        function recordEventFunc(eventType) {
+            return function() { _events.push(eventType); };
+        }
+
+        function onFailure(error) {
+            forceTestFailureFromPromise(test, error);
+        }
+
+        function onMessage(event) {
+            assert_equals(event.target, _mediaKeySession);
+            assert_true(event instanceof window.MediaKeyMessageEvent);
+            assert_equals(event.type, 'message');
+
+            if (event.messageType !== 'individualization-request') {
+                _events.push(event.messageType);
+            }
+
+            config.messagehandler(event.messageType, event.message).then(function(response) {
+                _events.push(event.messageType + '-response');
+                return _mediaKeySession.update(response);
+            }).then(test.step_func(function() {
+                _events.push('update-resolved');
+                if (event.messageType === 'license-release') {
+                    checkEventSequence( _events,
+                                    ['encrypted','generaterequest-done',
+                                        ['license-request', 'license-request-response', 'update-resolved'], // potentially repeating
+                                        'keystatuseschange',
+                                        'playing',
+                                        'remove-resolved',
+                                        'keystatuseschange',
+                                        'license-release',
+                                        'license-release-response',
+                                        'closed-attribute-resolved',
+                                        'update-resolved' ]);
+                    test.done();
+                }
+
+                if ( event.messageType === 'license-request' ) {
+                    _video.setMediaKeys(_mediaKeys);
+                }
+            })).catch(onFailure);
+        }
+
+        function onEncrypted(event) {
+            assert_equals(event.target, _video);
+            assert_true(event instanceof window.MediaEncryptedEvent);
+            _events.push(event.type);
+            _mediaKeySession.generateRequest(   config.initDataType || event.initDataType,
+                                                config.initData || event.initData ).then( function() {
+                _events.push( 'generaterequest-done' );
+                _sessionId = _mediaKeySession.sessionId;
+            }).catch(onFailure);
+        }
+
+        function onTimeupdate(event) {
+            if (_video.currentTime > (config.duration || 1) && !_timeupdateEvent) {
+                _timeupdateEvent = true;
+                _video.pause();
+                _mediaKeySession.remove().then(recordEventFunc('remove-resolved')).catch(onFailure);
+            }
+        }
+
+        navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]).then(function(access) {
+            return access.createMediaKeys();
+        }).then(function(mediaKeys) {
+            _mediaKeys = mediaKeys;
+            waitForEventAndRunStep('encrypted', _video, onEncrypted, test);
+            waitForEventAndRunStep('playing', _video, recordEventFunc('playing'), test);
+
+            // Not using waitForEventAndRunStep() to avoid too many
+            // EVENT(onTimeUpdate) logs.
+            _video.addEventListener('timeupdate', onTimeupdate, true);
+
+            _mediaKeySession = _mediaKeys.createSession( 'persistent-usage-record' );
+            waitForEventAndRunStep('message', _mediaKeySession, onMessage, test);
+            waitForEventAndRunStep('keystatuseschange', _mediaKeySession, recordEventFunc('keystatuseschange'), test);
+            _mediaKeySession.closed.then(recordEventFunc('closed-attribute-resolved'));
+            return config.servercertificate ? _mediaKeys.setServerCertificate(config.servercertificate) : true;
+        }).then(function( success ) {
+            return testmediasource(config);
+        }).then(function(source) {
+            _video.src = URL.createObjectURL(source);
+            return source.done;
+        }).then(function(){
+            _video.play();
+        }).catch(onFailure);
+    }, testname);
+}