[wasm] asm.js - Remove Wasm.instantiateModuleFromAsm, use asm.js directly.

test/mjsunit/regress/regress-575364.js

Index: test/mjsunit/regress/regress-575364.js
diff --git a/test/mjsunit/regress/regress-575364.js b/test/mjsunit/regress/regress-575364.js
index c0652058fadeea15e7998cc634d34d8afb5410b7..19f5577908a2fbf3c52189d5a69c6d5bc61add0d 100644
--- a/test/mjsunit/regress/regress-575364.js
+++ b/test/mjsunit/regress/regress-575364.js
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags:  --expose-wasm
+// Flags: --expose-wasm --validate-asm --allow-natives-syntax
 
 function f() {
   "use asm";
 
 }
 assertFalse(Wasm == undefined);
-assertThrows(function() { Wasm.instantiateModuleFromAsm(f.toString()); });
+assertFalse(%IsAsmWasmCode(f));