[runtime] Unify the ToObject handling.

src/runtime/runtime-debug.cc

Index: src/runtime/runtime-debug.cc
diff --git a/src/runtime/runtime-debug.cc b/src/runtime/runtime-debug.cc
index d94c75fa0e135cf11f4d9fe1cd270124eeb891d5..ab013037689c092fc9bd2a10cdb5b55e987b5e58 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -702,25 +702,7 @@ RUNTIME_FUNCTION(Runtime_GetFrameDetails) {
   // Add the receiver (same as in function frame).
   Handle<Object> receiver(it.frame()->receiver(), isolate);
   DCHECK(!function->shared()->IsBuiltin());
-  if (!receiver->IsJSObject() && is_sloppy(shared->language_mode())) {
-    // If the receiver is not a JSObject and the function is not a builtin or
-    // strict-mode we have hit an optimization where a value object is not
-    // converted into a wrapped JS objects. To hide this optimization from the
-    // debugger, we wrap the receiver by creating correct wrapper object based
-    // on the function's native context.
-    // See ECMA-262 6.0, 9.2.1.2, 6 b iii.
-    if (receiver->IsUndefined()) {
-      receiver = handle(function->global_proxy());
-    } else {
-      Context* context = function->context();
-      Handle<Context> native_context(Context::cast(context->native_context()));
-      if (!Object::ToObject(isolate, receiver, native_context)
-               .ToHandle(&receiver)) {
-        // This only happens if the receiver is forcibly set in %_CallFunction.
-        return heap->undefined_value();
-      }
-    }
-  }
+  DCHECK_IMPLIES(is_sloppy(shared->language_mode()), receiver->IsJSReceiver());
   details->set(kFrameDetailsReceiverIndex, *receiver);
 
   DCHECK_EQ(details_size, details_index);