[wasm] Enable wasm frame inspection for debugging

src/wasm/wasm-module.cc

Index: src/wasm/wasm-module.cc
diff --git a/src/wasm/wasm-module.cc b/src/wasm/wasm-module.cc
index 6e79397c26dfa8a4f62ce7c19b622b1f8799c0bd..d621e8b37e3afb6997aaed0b79fe03c502abc1e3 100644
--- a/src/wasm/wasm-module.cc
+++ b/src/wasm/wasm-module.cc
@@ -1026,6 +1026,12 @@ WasmDebugInfo* GetDebugInfo(JSObject* wasm) {
   return *new_info;
 }
 
+int GetNumberOfFunctions(JSObject* wasm) {
+  Object* func_names_obj = wasm->GetInternalField(kWasmFunctionNamesArray);
+  // TODO(clemensh): this looks inside an array constructed elsewhere. Refactor.
+  return ByteArray::cast(func_names_obj)->get_int(0);
+}
+
 namespace testing {
 
 int32_t CompileAndRunWasmModule(Isolate* isolate, const byte* module_start,