AudioContext.decodeAudioData returns a Promise

LayoutTests/webaudio/dom-exceptions-expected.txt

Index: LayoutTests/webaudio/dom-exceptions-expected.txt
diff --git a/LayoutTests/webaudio/dom-exceptions-expected.txt b/LayoutTests/webaudio/dom-exceptions-expected.txt
index f4a138f4848c0e8df1dfd288f5ecb4bb01d03698..930f2fd85d46bf7e65f8704ef0ae654ef634421f 100644
--- a/LayoutTests/webaudio/dom-exceptions-expected.txt
+++ b/LayoutTests/webaudio/dom-exceptions-expected.txt
@@ -16,7 +16,6 @@ PASS context.createBuffer(1, 1, 3000) did not throw exception.
 PASS context.createBuffer(1, 1, 192000) did not throw exception.
 PASS context.createBuffer(1, 0, context.sampleRate) threw exception NotSupportedError: Failed to execute 'createBuffer' on 'AudioContext': The number of frames provided (0) is less than or equal to the minimum bound (0)..
 PASS context.createBuffer(new ArrayBuffer(100), true) threw exception TypeError: Failed to execute 'createBuffer' on 'AudioContext': 3 arguments required, but only 2 present..
-PASS context.decodeAudioData(null, function() {}, function () {}) threw exception SyntaxError: Failed to execute 'decodeAudioData' on 'AudioContext': invalid ArrayBuffer for audioData..
 PASS context.createMediaElementSource(null) threw exception InvalidStateError: Failed to execute 'createMediaElementSource' on 'AudioContext': invalid HTMLMedialElement..
 PASS context.createMediaStreamSource(null) threw exception InvalidStateError: Failed to execute 'createMediaStreamSource' on 'AudioContext': invalid MediaStream source.
 PASS context.createScriptProcessor(1, 1, 1) threw exception IndexSizeError: Failed to execute 'createScriptProcessor' on 'AudioContext': buffer size (1) must be a power of two between 256 and 16384..