[wasm] asm.js - Check stdlib.NaN is valid, prepare for the rest.

src/asmjs/asm-js.h

Index: src/asmjs/asm-js.h
diff --git a/src/asmjs/asm-js.h b/src/asmjs/asm-js.h
index 0af485ec7dba17aeff96953a230cc8e19cdf711d..44bf04df9eee130bb262fa4b055b0b983f8d26f3 100644
--- a/src/asmjs/asm-js.h
+++ b/src/asmjs/asm-js.h
@@ -20,10 +20,12 @@ namespace internal {
 class AsmJs {
  public:
   static MaybeHandle<FixedArray> ConvertAsmToWasm(i::ParseInfo* info);
+  static bool IsStdlibValid(i::Isolate* isolate, Handle<FixedArray> wasm_data,
+                            Handle<JSReceiver> stdlib);
   static MaybeHandle<Object> InstantiateAsmWasm(i::Isolate* isolate,
                                                 Handle<FixedArray> wasm_data,
                                                 Handle<JSArrayBuffer> memory,
-                                                Handle<JSObject> foreign);
+                                                Handle<JSReceiver> foreign);
 };
 
 }  // namespace internal