Revert of [wasm] Remove support for experimental version 0xD.

test/mjsunit/wasm/jsapi-harness.js

Index: test/mjsunit/wasm/jsapi-harness.js
diff --git a/test/mjsunit/wasm/jsapi-harness.js b/test/mjsunit/wasm/jsapi-harness.js
index 0c3b91b2651904633f27f372f44e6e1d6b688625..c6ff42753055071c1017f05efa20e2d45f3f494a 100644
--- a/test/mjsunit/wasm/jsapi-harness.js
+++ b/test/mjsunit/wasm/jsapi-harness.js
@@ -1,9 +1,6 @@
 // Copyright 2017 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-
-// TODO(titzer): update spec test suite to version 0x1
-if (false) {
 
 // TODO(eholk): Once we have stable test IDs, use those as the key instead.
 // See https://github.com/WebAssembly/spec/issues/415
@@ -79,5 +76,3 @@
     }
   }
 });
-
-}