More aura build fixes

chrome/app/chrome_exe_main_aura.cc

+// Copyright (c) 2011 The Chromium 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 "build/build_config.h"
+
+// The entry point for all invocations of Chromium, browser and renderer. On
+// windows, this does nothing but load chrome.dll and invoke its entry point in
+// order to make it easy to update the app from GoogleUpdate. We don't need
+// that extra layer with on linux.
+
+extern "C" {
+int ChromeMain(int argc, const char** argv);
+}
+
+int main(int argc, const char** argv) {
+  return ChromeMain(argc, argv);
+}