[object] Add Script::IsUserJavaScript().

src/messages.cc

Index: src/messages.cc
diff --git a/src/messages.cc b/src/messages.cc
index 2019b40d2280097ebf6f3896a4dc343de80c16fd..f0555282b94c967dd96e682a2a6c3ea7d242aef0 100644
--- a/src/messages.cc
+++ b/src/messages.cc
@@ -739,7 +739,7 @@ Handle<Object> AsmJsWasmStackFrame::GetFunction() const {
 Handle<Object> AsmJsWasmStackFrame::GetFileName() {
   Handle<Script> script =
       wasm::GetScript(Handle<JSObject>::cast(wasm_instance_));
-  DCHECK_EQ(Script::TYPE_NORMAL, script->type());
+  DCHECK(script->IsUserJavaScript());
   return handle(script->name(), isolate_);
 }
 
@@ -765,7 +765,7 @@ int AsmJsWasmStackFrame::GetLineNumber() {
   DCHECK_LE(0, GetPosition());
   Handle<Script> script =
       wasm::GetScript(Handle<JSObject>::cast(wasm_instance_));
-  DCHECK_EQ(Script::TYPE_NORMAL, script->type());
+  DCHECK(script->IsUserJavaScript());
   return Script::GetLineNumber(script, GetPosition()) + 1;
 }
 
@@ -773,7 +773,7 @@ int AsmJsWasmStackFrame::GetColumnNumber() {
   DCHECK_LE(0, GetPosition());
   Handle<Script> script =
       wasm::GetScript(Handle<JSObject>::cast(wasm_instance_));
-  DCHECK_EQ(Script::TYPE_NORMAL, script->type());
+  DCHECK(script->IsUserJavaScript());
   return Script::GetColumnNumber(script, GetPosition()) + 1;
 }