[promises] Refactor debug code

src/runtime/runtime-debug.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/debug/debug-evaluate.h"
 #include "src/debug/debug-frames.h"
 #include "src/debug/debug-scopes.h"
@@ skipping 1881 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_DebugNextMicrotaskId) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 0);
   return Smi::FromInt(isolate->GetNextDebugMicrotaskId());
 }
 
 RUNTIME_FUNCTION(Runtime_DebugAsyncTaskEvent) {
   DCHECK(args.length() == 3);
   HandleScope scope(isolate);
-  CONVERT_ARG_HANDLE_CHECKED(String, type, 0);
-  CONVERT_ARG_HANDLE_CHECKED(Object, id, 1);
-  CONVERT_ARG_HANDLE_CHECKED(String, name, 2);
-  isolate->debug()->OnAsyncTaskEvent(type, id, name);
+  CONVERT_SMI_ARG_CHECKED(type, 0);
+  CONVERT_SMI_ARG_CHECKED(id, 1);
+  CONVERT_SMI_ARG_CHECKED(name, 2);
+  isolate->debug()->OnAsyncTaskEvent(static_cast<PromiseDebugActionType>(type),
+                                     id,
+                                     static_cast<PromiseDebugActionName>(name));
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_DebugIsActive) {
   SealHandleScope shs(isolate);
   return Smi::FromInt(isolate->debug()->is_active());
 }
 
 
 RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) {
   UNIMPLEMENTED();
   return NULL;
 }
 
 }  // namespace internal
 }  // namespace v8