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

chrome/browser/fullscreen_ozone.cc

Index: chrome/browser/fullscreen_ozone.cc
diff --git a/chrome/browser/fullscreen_ozone.cc b/chrome/browser/fullscreen_ozone.cc
new file mode 100644
index 0000000000000000000000000000000000000000..60e9588e55e9f78fefaeba5850b96cd3e4122a01
--- /dev/null
+++ b/chrome/browser/fullscreen_ozone.cc
@@ -0,0 +1,12 @@
+// Copyright (c) 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 "base/logging.h"
+
+bool IsFullScreenMode() {
+  NOTIMPLEMENTED();
+  // TODO(tonikitoo): Verify if mus has something that can be reused here:
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=640390
+  return false;
+}