EME: Update tests so 'audioCapabilities' always provided

third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html

Index: third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html
diff --git a/third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html b/third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html
index efe2e28c22bbf45a75520ce84dfe4114382a6e44..02e723c51d12287240542f16b76a4020d9ec4a64 100644
--- a/third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html
+++ b/third_party/WebKit/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeysession-reference.html
@@ -31,12 +31,10 @@
                     return window.internals.activeDOMObjectCount(document) - startingActiveDOMObjectCount;
                 }
 
-                getSupportedInitDataType().then(function(type) {
-                    initDataType = type;
-                    initData = getInitData(initDataType);
-                    return navigator.requestMediaKeySystemAccess('org.w3.clearkey', [{}]);
-                }).then(function(access) {
+                navigator.requestMediaKeySystemAccess('org.w3.clearkey', simpleConfiguration()).then(function(access) {
                     assert_equals(access.keySystem, 'org.w3.clearkey');

[ddorwin, 2016/07/20 17:05:27]

ditto

[jrummell, 2016/07/20 19:07:48]

Done.

+                    initDataType = access.getConfiguration().initDataTypes[0];
+                    initData = getInitData(initDataType);
                     return access.createMediaKeys();
                 }).then(function(result) {
                     mediaKeys = result;