Cleanup ScopeInfo and SerializedScopeInfo.

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index 02998f9b8ee9f1d0d210c80ff9add4117762be3a..fac8ed96188a8c019aa05d73b414d2e5fc5d61c3 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -621,8 +621,9 @@ MaybeObject* Accessors::FunctionGetArguments(Object* object, void*) {
 
       if (!frame->is_optimized()) {
         // If there is an arguments variable in the stack, we return that.
-        Handle<SerializedScopeInfo> info(function->shared()->scope_info());
-        int index = info->StackSlotIndex(isolate->heap()->arguments_symbol());
+        Handle<ScopeInfo> scope_info(function->shared()->scope_info());
+        int index = scope_info->StackSlotIndex(
+            isolate->heap()->arguments_symbol());
         if (index >= 0) {
           Handle<Object> arguments(frame->GetExpression(index), isolate);
           if (!arguments->IsArgumentsMarker()) return *arguments;