[wasm] Add guard regions to end of WebAssembly.Memory buffers

test/debugger/debugger.status

 # Copyright 2016 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.
 
 [
 [ALWAYS, {
   # Issue 3660: Replacing activated TurboFan frames by unoptimized code does
   # not work, but we expect it to not crash.
   'debug/debug-step-turbofan': [PASS, FAIL],
 }],  # ALWAYS
 
 ##############################################################################
 ['gc_stress == True', {
   # Skip tests not suitable for GC stress.
   # Tests taking too long
   'debug/debug-stepout-scope-part1': [SKIP],
   'debug/debug-stepout-scope-part2': [SKIP],
   'debug/debug-stepout-scope-part3': [SKIP],
   'debug/debug-stepout-scope-part4': [SKIP],
   'debug/debug-stepout-scope-part5': [SKIP],
   'debug/debug-stepout-scope-part6': [SKIP],
   'debug/debug-stepout-scope-part7': [SKIP],
   'debug/debug-stepout-scope-part8': [SKIP],
 }],  # 'gc_stress == True'
 
 ##############################################################################
+['variant == asm_wasm', {
+  '*': [SKIP],
+}],  # variant == asm_wasm
+
+##############################################################################
+['variant == wasm_traps', {
+  '*': [SKIP],
+}],  # variant == wasm_traps
+
 ['variant == turbofan_opt', {
 
   # TODO(jarin/mstarzinger): Investigate debugger issues with TurboFan.
   'debug/ignition/debug-break-on-stack': [FAIL],
 }],  # variant == turbofan_opt
 ]