Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/clearkey-update-non-ascii-input.js

+// This test is only applicable to clearkey
+function runTest(config, qualifier)
+{
+    var testname = testnamePrefix(qualifier, config.keysystem) + ' test handling of non-ASCII responses for update()';
+
+    var configuration = getSimpleConfigurationForContent(config.content);
+
+    if (config.initDataType) {
+        configuration.initDataTypes = [config.initDataType];
+    }
+
+    promise_test(function (test) {
+        var initDataType;
+        var initData;
+        var mediaKeySession;
+        var messageEventFired = false;
+
+        return navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]).then(function (access) {
+            initDataType = access.getConfiguration().initDataTypes[0];
+            initData = getInitData(config.content, initDataType);
+            return access.createMediaKeys();
+        }).then(function (mediaKeys) {
+            mediaKeySession = mediaKeys.createSession();
+            var eventWatcher = new EventWatcher(test, mediaKeySession, ['message']);
+            var promise = eventWatcher.wait_for('message');
+            mediaKeySession.generateRequest(initDataType, initData);
+            return promise;
+        }).then(function (messageEvent) {
+            // |jwkSet| contains a  non-ASCII character \uDC00.
+            var jwkSet = '{"keys":[{'
+                +     '"kty":"oct",'
+                +     '"k":"MDEyMzQ1Njc4OTAxMjM0NQ",'
+                +     '"kid":"MDEyMzQ1Njc4O\uDC00TAxMjM0NQ"'
+                + '}]}';
+            messageEventFired = true;
+            return messageEvent.target.update(stringToUint8Array(jwkSet));
+        }).then(function () {
+            assert_unreached('Error: update() should fail because the processed message has non-ASCII character.');
+        }).catch(function (error) {
+            if(messageEventFired){
+                assert_equals(error.name, 'TypeError');
+            }
+            else {
+                assert_unreached('Error: ' + error.name);
+            }
+        });
+    }, testname);
+}