[Module] Add layout tests

third_party/WebKit/Source/core/dom/ModuleScript.cpp

Index: third_party/WebKit/Source/core/dom/ModuleScript.cpp
diff --git a/third_party/WebKit/Source/core/dom/ModuleScript.cpp b/third_party/WebKit/Source/core/dom/ModuleScript.cpp
index a0f6a396a78fb14fe72bdbab795330f2c96185aa..43959612670f14417584df240498bb3d6d33929a 100644
--- a/third_party/WebKit/Source/core/dom/ModuleScript.cpp
+++ b/third_party/WebKit/Source/core/dom/ModuleScript.cpp
@@ -7,6 +7,7 @@
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "v8/include/v8.h"
+#include "bindings/core/v8/V8BindingForCore.h"
 
 namespace blink {
 
@@ -22,6 +23,9 @@ void ModuleScript::SetInstantiationErrorAndClearRecord(ScriptValue error) {
   DCHECK(!error.IsEmpty());
   {
     ScriptState::Scope scope(error.GetScriptState());
+    // String str = ToCoreString(
+    //     error.V8Value()->ToString(error.GetContext()).ToLocalChecked());
+    // fprintf(stderr, "[%s]\n", str.Utf8().Data());
     instantiation_error_.Set(error.GetIsolate(), error.V8Value());
   }