Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/invalid-license.js

+function runTest(config)
+{
+    promise_test(function (test) {
+        var initDataType;
+        var initData;
+        var keySystem = config.keysystem;
+        var invalidLicense = new Uint8Array([0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77]);
+        var messageEventFired = false;
+
+        return navigator.requestMediaKeySystemAccess(keySystem, getSimpleConfiguration()).then(function (access) {
+            initDataType = access.getConfiguration().initDataTypes[0];
+            initData = getInitData(initDataType);
+            return access.createMediaKeys();
+        }).then(function (mediaKeys) {
+            var keySession = mediaKeys.createSession();
+            var eventWatcher = new EventWatcher(test, keySession, ['message']);
+            var promise = eventWatcher.wait_for('message');
+            keySession.generateRequest(initDataType, initData);
+            return promise;
+        }).then(function (messageEvent) {
+            messageEventFired = true;
+            return messageEvent.target.update(invalidLicense);
+        }).then(function () {
+            assert_unreached('Error: update() should fail because of an invalid license.');
+        }).catch(function (error) {
+            if(messageEventFired) {
+                assert_equals(error.name, 'TypeError');
+            } else {
+                assert_unreached('Error: ' + error.name);
+            }
+        });
+    }, 'Update with invalid Clear Key license');
+}