Convert MediaKeyStatusMap to iterable<BufferSource,MediaKeyStatus>

LayoutTests/media/encrypted-media/encrypted-media-utils.js

Index: LayoutTests/media/encrypted-media/encrypted-media-utils.js
diff --git a/LayoutTests/media/encrypted-media/encrypted-media-utils.js b/LayoutTests/media/encrypted-media/encrypted-media-utils.js
index 5a4f15afaf0c94d2e18c64457b4aa64ebd5ed960..38a707bb470400d8a91c5d06bd75cfce4d3f17a5 100644
--- a/LayoutTests/media/encrypted-media/encrypted-media-utils.js
+++ b/LayoutTests/media/encrypted-media/encrypted-media-utils.js
@@ -143,7 +143,7 @@ function dumpKeyStatuses(keyStatuses)
         consoleWrite(arrayBufferAsString(entry[0]) + ", " + entry[1]);
     }
     consoleWrite("keyStatuses.forEach()");
-    keyStatuses.forEach(function(value, key, map) {
+    keyStatuses.forEach(function(value, key) {
         consoleWrite(arrayBufferAsString(key) + ", " + value);
     });
 }