[wasm] Rename the WASM object to _WASMEXP_.

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-wasm --expose-gc --stress-compaction
 
 load("test/mjsunit/wasm/wasm-constants.js");
 
 var kMemSize = 4096;
 
@@ skipping 27 matching lines @@
               kExprI32LoadMem,0,kExprGetLocal,0,
               kExprBr,2, kExprI8Const, 255,
               kExprSetLocal,0,
                 kExprI32Sub,kExprGetLocal,0,kExprI8Const,4,
       kExprI8Const,0,
     // names
     kDeclEnd,
     'm', 'a', 'i', 'n', 0       //  --
   );
 
-  return WASM.instantiateModule(data, null, memory);
+  return _WASMEXP_.instantiateModule(data, null, memory);
 }
 
 function testPokeMemory() {
   var module = genModule(null);
   var buffer = module.memory;
   assertEquals(kMemSize, buffer.byteLength);
 
   var array = new Int8Array(buffer);
   assertEquals(kMemSize, array.length);
 
@@ skipping 93 matching lines @@
     0, 0,                          // local float64 count
     kBodySize, 0,                  // code size
     // geti: return mem[a] = mem[b]
     kExprI32StoreMem, 0, kExprGetLocal, 0, kExprI32LoadMem, 0, kExprGetLocal, 1,
     // names
     kDeclEnd,
     'g','e','t','i', 0             //  --
   );
 
   var memory = null;
-  var module = WASM.instantiateModule(data, null, memory);
+  var module = _WASMEXP_.instantiateModule(data, null, memory);
 
   var offset;
 
   function read() { return module.geti(0, offset); }
   function write() { return module.geti(offset, 0); }
 
   for (offset = 0; offset < 4092; offset++) {
     assertEquals(0, read());
     assertEquals(0, write());
   }
 
 
   for (offset = 4093; offset < 4124; offset++) {
     assertTraps(kTrapMemOutOfBounds, read);
     assertTraps(kTrapMemOutOfBounds, write);
   }
 }
 
 testOOBThrows();