[wasm] Enable wasm frame inspection for debugging

src/debug/debug-evaluate.cc

Index: src/debug/debug-evaluate.cc
diff --git a/src/debug/debug-evaluate.cc b/src/debug/debug-evaluate.cc
index 62b7a2b4269bf79104633d0e0a552c8ac4f98bc7..ab1e8d93dc202d5cc6f62f67cae8e7010c89d626 100644
--- a/src/debug/debug-evaluate.cc
+++ b/src/debug/debug-evaluate.cc
@@ -54,8 +54,9 @@ MaybeHandle<Object> DebugEvaluate::Local(Isolate* isolate,
   DisableBreak disable_break_scope(isolate->debug(), disable_break);
 
   // Get the frame where the debugging is performed.
-  JavaScriptFrameIterator it(isolate, frame_id);
-  JavaScriptFrame* frame = it.frame();
+  StackTraceFrameIterator it(isolate, frame_id);
+  if (!it.is_javascript()) return isolate->factory()->undefined_value();
+  JavaScriptFrame* frame = it.javascript_frame();
 
   // Traverse the saved contexts chain to find the active context for the
   // selected frame.
@@ -126,8 +127,7 @@ DebugEvaluate::ContextBuilder::ContextBuilder(Isolate* isolate,
       frame_(frame),
       inlined_jsframe_index_(inlined_jsframe_index) {
   FrameInspector frame_inspector(frame, inlined_jsframe_index, isolate);
-  Handle<JSFunction> local_function =
-      Handle<JSFunction>::cast(frame_inspector.GetFunction());
+  Handle<JSFunction> local_function = frame_inspector.GetFunction();
   Handle<Context> outer_context(local_function->context());
   evaluation_context_ = outer_context;
   outer_info_ = handle(local_function->shared());