[wasm] Rename the WASM object to _WASMEXP_.

test/mjsunit/wasm/divrem-trap.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-wasm --expose-gc --allow-natives-syntax
 
 load("test/mjsunit/wasm/wasm-constants.js");
 
 function assertTraps(code, msg) {
   var threwException = true;
@@ skipping 34 matching lines @@
     kBodySize, 0,
     // main body
     opcode,                     // --
     kExprGetLocal, 0,           // --
     kExprGetLocal, 1,           // --
     // names
     kDeclEnd,
     'm', 'a', 'i', 'n', 0       //  --
   );
 
-  var module = WASM.instantiateModule(data);
+  var module = _WASMEXP_.instantiateModule(data);
 
   assertEquals("function", typeof module.main);
 
   return module.main;
 }
 
 var divs = makeDivRem(kExprI32DivS);
 var divu = makeDivRem(kExprI32DivU);
 
 assertEquals( 33, divs( 333, 10));
@@ skipping 22 matching lines @@
 assertEquals( 3, remu(-443, 10));
 
 assertTraps(kTrapRemByZero, "rems(100, 0);");
 assertTraps(kTrapRemByZero, "rems(-1009, 0);");
 
 assertTraps(kTrapRemByZero, "remu(200, 0);");
 assertTraps(kTrapRemByZero, "remu(-2009, 0);");
 
 assertEquals(-2147483648, remu(0x80000000, -1));
 assertEquals(0, rems(0x80000000, -1));