Make GTK and Aura parts orthogonal to OS parts

chrome/browser/chrome_browser_parts_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 "chrome/browser/chrome_browser_parts_aura.h"
+
+#include "base/logging.h"
+
+ChromeBrowserPartsAura::ChromeBrowserPartsAura()
+    : content::BrowserParts() {
+}
+
+void ChromeBrowserPartsAura::PreEarlyInitialization() {
+  NOTIMPLEMENTED();
+}
+
+void ChromeBrowserPartsAura::PostMainMessageLoopStart() {
+  NOTIMPLEMENTED();
+}
+
+void ChromeBrowserPartsAura::ShowMessageBox(const char* message) {
+  LOG(ERROR) << "ShowMessageBox (not implemented): " << message;
+  NOTIMPLEMENTED();
+}