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

chrome/browser/ui/views/tabs/window_finder_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/ui/views/tabs/window_finder.h"
+#include "chrome/browser/ui/views/tabs/window_finder_mus.h"
+
+gfx::NativeWindow WindowFinder::GetLocalProcessWindowAtPoint(
+    const gfx::Point& screen_point,
+    const std::set<gfx::NativeWindow>& ignore) {
+  gfx::NativeWindow mus_result = nullptr;
+  if (GetLocalProcessWindowAtPointMus(screen_point, ignore, &mus_result))
+    return mus_result;
+
+  NOTREACHED() << "For Ozone builds, only --mash launch is supported for now.";
+  return nullptr;
+}