Add --enable-wasm to wasm tests.

test/mjsunit/wasm/module-memory.js

 // 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.
 
-// Flags: --expose-gc --stress-compaction
+// Flags: --expose-wasm --expose-gc --stress-compaction
 
 load("test/mjsunit/wasm/wasm-constants.js");
 
 var kMemSize = 4096;
 
 function genModule(memory) {
   var kBodySize = 27;
   var kNameMainOffset = 28 + kBodySize + 1;
 
   var data = bytes(
@@ skipping 156 matching lines @@
   }
 
 
   for (offset = 4093; offset < 4124; offset++) {
     assertTraps(kTrapMemOutOfBounds, read);
     assertTraps(kTrapMemOutOfBounds, write);
   }
 }
 
 testOOBThrows();