Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/playback-temporary-events.js

+function runTest(config,qualifier) {
+
+    var testname = testnamePrefix(qualifier, config.keysystem)
+                                    + ', temporary, '
+                                    + /video\/([^;]*)/.exec(config.videoType)[1]
+                                    + ', playback, check events';
+
+    var configuration = {   initDataTypes: [ config.initDataType ],
+                            audioCapabilities: [ { contentType: config.audioType } ],
+                            videoCapabilities: [ { contentType: config.videoType } ],
+                            sessionTypes: [ 'temporary' ] };
+
+    async_test(function(test) {
+        var _video = config.video,
+            _mediaKeys,
+            _mediaKeySession,
+            _mediaSource,
+            _timeupdateEvent = false,
+            _events = [ ];
+
+        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');
+
+            assert_in_array(  event.messageType, ['license-request', 'individualization-request']);
+
+            if (event.messageType !== 'individualization-request') {
+                _events.push(event.messageType);
+            }
+
+            config.messagehandler(event.messageType, event.message).then(function(response) {
+                _events.push('license-request-response');
+                waitForEventAndRunStep('keystatuseschange', _mediaKeySession, onKeyStatusesChange, test);
+                return _mediaKeySession.update( response );
+            }).then(function() {
+                _events.push('update-resolved');
+            }).catch(onFailure);
+        }
+
+        function onKeyStatusesChange(event) {
+            assert_equals(event.target, _mediaKeySession);
+            assert_true(event instanceof window.Event);
+            assert_equals(event.type, 'keystatuseschange');
+            var hasKeys = false, pendingKeys = false;
+            _mediaKeySession.keyStatuses.forEach(function(value, keyid) {
+                assert_in_array(value, ['status-pending', 'usable']);
+                hasKeys = true;
+                pendingKeys = pendingKeys || (value === 'status-pending');
+            });
+
+            if (!hasKeys) {
+                _events.push('emptykeyslist');
+            } else if (!pendingKeys ) {
+                _events.push('allkeysusable');
+                _video.setMediaKeys(_mediaKeys).catch(onFailure);
+            } else {
+                assert_unreached('unexpected ' + event.type + ' event');
+            }
+        }
+
+        function onEncrypted(event) {
+            assert_equals(event.target, _video);
+            assert_true(event instanceof window.MediaEncryptedEvent);
+            assert_equals(event.type, 'encrypted');
+
+            waitForEventAndRunStep('message', _mediaKeySession, onMessage, test);
+            _mediaKeySession.generateRequest(config.initData ? config.initDataType : event.initDataType,
+                                                config.initData || event.initData ).then(function() {
+                _events.push('generaterequest');
+            }).catch(onFailure);
+        }
+
+        function onClosed(event) {
+            _events.push('closed-attribute-resolved');
+            setTimeout(test.step_func(function() {
+                checkEventSequence( _events,
+                                    ['generaterequest',
+                                        ['license-request', 'license-request-response', 'update-resolved'], // potentially repeating
+                                        'allkeysusable',
+                                        'playing',
+                                        'closed-attribute-resolved',
+                                        'close-promise-resolved',
+                                        'emptykeyslist']);
+                test.done();
+            } ), 0);
+        }
+
+        function onTimeupdate(event) {
+            if (_video.currentTime > (config.duration || 1) && !_timeupdateEvent) {
+                _timeupdateEvent = true;
+                _video.pause();
+
+                _mediaKeySession.closed.then(test.step_func(onClosed));
+                _mediaKeySession.close().then(function() {
+                    _events.push('close-promise-resolved');
+                }).catch(onFailure);
+            }
+        }
+
+        function onPlaying(event) {
+            _events.push('playing');
+
+            // Not using waitForEventAndRunStep() to avoid too many
+            // EVENT(onTimeUpdate) logs.
+            _video.addEventListener('timeupdate', onTimeupdate, true);
+        }
+
+        navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]).then(function(access) {
+            return access.createMediaKeys();
+        }).then(function(mediaKeys) {
+            _mediaKeys = mediaKeys;
+            _mediaKeySession = _mediaKeys.createSession('temporary');
+
+            waitForEventAndRunStep('encrypted', _video, onEncrypted, test);
+            waitForEventAndRunStep('playing', _video, onPlaying, test);
+        }).then(function() {
+            return testmediasource(config);
+        }).then(function(source) {
+            _mediaSource = source;
+            _video.src = URL.createObjectURL(_mediaSource);
+            return source.done;
+        }).then(function(){
+            _video.play();
+        }).catch(onFailure);
+    }, testname);
+}