[wasm][asm.js] Check that property keys are literals for imports.

test/mjsunit/asm/asm-validation.js

Index: test/mjsunit/asm/asm-validation.js
diff --git a/test/mjsunit/asm/asm-validation.js b/test/mjsunit/asm/asm-validation.js
index cc0bd8244af96439016a0df34dbd1cb44346cd03..0c9e841fe94ad4b95ac0579b482cf5ed9b41ccb5 100644
--- a/test/mjsunit/asm/asm-validation.js
+++ b/test/mjsunit/asm/asm-validation.js
@@ -316,6 +316,17 @@ function assertValidAsm(func) {
   assertEquals(3, m.foo(3));
 })();
 
+(function TestBadImport() {
+  function Module(stdlib) {
+    "use asm";
+    var set = 0;
+    var foo = stdlib[set];
+    return {};
+  }
+  var m = Module(this);
+  assertFalse(%IsAsmWasmCode(Module));
+})();
+
 (function TestBadishBooleanExprAnnotation() {
   function Module() {
     "use asm";