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

test/cctest/wasm/test-run-wasm-module.cc

 // 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.
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/snapshot/code-serializer.h"
 #include "src/version.h"
 #include "src/wasm/module-decoder.h"
@@ skipping 222 matching lines @@
     v8::MaybeLocal<v8::WasmCompiledModule> deserialized =
         v8::WasmCompiledModule::DeserializeOrCompile(
             current_isolate_v8(), serialized_bytes(), wire_bytes());
     return deserialized;
   }
 
   void DeserializeAndRun() {
     ErrorThrower thrower(current_isolate(), "");
     v8::Local<v8::WasmCompiledModule> deserialized_module;
     CHECK(Deserialize().ToLocal(&deserialized_module));
-    Handle<JSObject> module_object =
-        Handle<JSObject>::cast(v8::Utils::OpenHandle(*deserialized_module));
+    Handle<WasmModuleObject> module_object = Handle<WasmModuleObject>::cast(
+        v8::Utils::OpenHandle(*deserialized_module));
     {
       DisallowHeapAllocation assume_no_gc;
       Handle<WasmCompiledModule> compiled_part(
           WasmCompiledModule::cast(module_object->GetInternalField(0)),
           current_isolate());
       CHECK_EQ(memcmp(compiled_part->module_bytes()->GetCharsAddress(),
                       wire_bytes().first, wire_bytes().second),
                0);
     }
     Handle<JSObject> instance =
@@ skipping 656 matching lines @@
     };
 
     testing::CompileInstantiateWasmModuleForTesting(isolate, &thrower, data,
                                                     data + arraysize(data),
                                                     ModuleOrigin::kWasmOrigin);
     // It should be possible to instantiate this module.
     CHECK(!thrower.error());
   }
   Cleanup();
 }