Use WebScopedRunV8Script in converted C++ functions

atom/common/api/event_emitter_caller.cc

@@ -0,0 +1,32 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/common/api/event_emitter_caller.h"
+
+#include "atom/common/api/locker.h"
+#include "base/memory/scoped_ptr.h"
+#include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
+
+#include "atom/common/node_includes.h"
+
+namespace mate {
+
+namespace internal {
+
+v8::Local<v8::Value> CallEmitWithArgs(v8::Isolate* isolate,
+                                      v8::Local<v8::Object> obj,
+                                      ValueVector* args) {
+  // Perform microtask checkpoint after running JavaScript.
+  scoped_ptr<blink::WebScopedRunV8Script> script_scope(
+      Locker::IsBrowserProcess() ?
+      nullptr : new blink::WebScopedRunV8Script(isolate));
+  // Use node::MakeCallback to call the callback, and it will also run pending
+  // tasks in Node.js.
+  return node::MakeCallback(
+      isolate, obj, "emit", args->size(), &args->front());
+}
+
+}  // namespace internal
+
+}  // namespace mate