[wasm] asm.js: Add asm_wasm variant to test asm.js->wasm pipeline.

test/simdjs/simdjs.status

 # Copyright 2015 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.
 
 # --------------------------------------------------------------------
 # If you add a test case to this file, please try to provide
 # an explanation of why the test fails; this may ease future
 # debugging.
 # --------------------------------------------------------------------
 
@@ skipping 13 matching lines @@
   'benchmarks/kernel-template': [PASS, SLOW],
   'benchmarks/memset': [PASS, SLOW],
 }],
 
 ######################################################################
 ['byteorder == big', {
   # shell_test_runner requires little-endian, skip it on big-endian.
   'shell_test_runner': [SKIP],
 }],  # 'byteorder == big'
 
+######################################################################
+['variant == asm_wasm', {
+  # TODO(bradnelson): https://bugs.chromium.org/p/v8/issues/detail?id=5356
+  'benchmarks/memset': [SKIP],
+}],  # variant == asm_wasm
+
 ]