Web MIDI: rename sysexEnabled to sysex

LayoutTests/webmidi/requestmidiaccess.html

Index: LayoutTests/webmidi/requestmidiaccess.html
diff --git a/LayoutTests/webmidi/requestmidiaccess.html b/LayoutTests/webmidi/requestmidiaccess.html
index 0ad6eb3b1c814ea2ba73443f8d7049744fdd430a..67167c6c96b4cbb340bc808f4a8671293c0f305d 100644
--- a/LayoutTests/webmidi/requestmidiaccess.html
+++ b/LayoutTests/webmidi/requestmidiaccess.html
@@ -47,7 +47,7 @@ function successCallback1(a) {
 
     // Now test System Exclusive access - our test mock should not allow this type of access.
     try {
-        navigator.requestMIDIAccess( { sysexEnabled: true } ).then(successCallback2, errorCallback2);
+        navigator.requestMIDIAccess( { sysex: true } ).then(successCallback2, errorCallback2);
         testPassed('navigator.requestMIDIAccess() did not throw exception.');
     } catch(e) {
         testFailed('navigator.requestMIDIAccess() should not throw exception.');