Make it possible to launch chrome --mash with ozone_platform={wayland|x11}, chromeos=0

chrome/browser/ui/views/frame/native_browser_frame_factory_auralinux.cc

 // Copyright 2013 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/ui/views/frame/native_browser_frame_factory.h"
 
 #include "chrome/browser/ui/views/frame/browser_frame_mus.h"
 #include "chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.h"
 #include "services/shell/runner/common/client_util.h"
 
 NativeBrowserFrame* NativeBrowserFrameFactory::Create(
     BrowserFrame* browser_frame,
     BrowserView* browser_view) {
   if (shell::ShellIsRemote())
     return new BrowserFrameMus(browser_frame, browser_view);
+
+#if defined(USE_OZONE)
+  NOTREACHED() << "For Ozone builds, --mash is being targeted, and "
+               << "the 'if' clause above would have taken place.";
+  return nullptr;
+#else
   return new DesktopBrowserFrameAuraLinux(browser_frame, browser_view);
+#endif
 }