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

chrome/browser/fullscreen_ozone.cc

+// Copyright 2016 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/fullscreen.h"
+
+#include "services/service_manager/runner/common/client_util.h"
+
+bool IsFullScreenMode() {
+  if (service_manager::ServiceManagerIsRemote()) {
+    // TODO: http://crbug.com/640390.
+    NOTIMPLEMENTED();
+    return false;
+  }
+
+  NOTREACHED() << "For Ozone builds, only --mash launch is supported for now.";

[rjkroege, 2016/11/07 20:07:59]

It's conceivable that we never  want anything else. But that's a discussion for
a different day.

+  return false;
+}