[wasm] JS-API: enable WebAssembly.instantiate tests; fix LinkError

src/asmjs/asm-js.cc

Index: src/asmjs/asm-js.cc
diff --git a/src/asmjs/asm-js.cc b/src/asmjs/asm-js.cc
index 9508b489545a408c2c2ae1738f6ba99b56248e2c..02e71487a54566c404a3c87303e532df7c64cf4c 100644
--- a/src/asmjs/asm-js.cc
+++ b/src/asmjs/asm-js.cc
@@ -254,8 +254,8 @@ MaybeHandle<Object> AsmJs::InstantiateAsmWasm(i::Isolate* isolate,
                                               Handle<JSReceiver> foreign) {
   base::ElapsedTimer instantiate_timer;
   instantiate_timer.Start();
-  i::Handle<i::JSObject> module(
-      i::JSObject::cast(wasm_data->get(kWasmDataCompiledModule)));
+  i::Handle<i::WasmModuleObject> module(
+      i::WasmModuleObject::cast(wasm_data->get(kWasmDataCompiledModule)));
   i::Handle<i::FixedArray> foreign_globals(
       i::FixedArray::cast(wasm_data->get(kWasmDataForeignGlobals)));