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

chrome/browser/media/webrtc/window_icon_util_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/media/webrtc/window_icon_util.h"
 
 #include "content/public/browser/desktop_media_id.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 
 gfx::ImageSkia GetWindowIcon(content::DesktopMediaID id) {
   DCHECK_EQ(content::DesktopMediaID::TYPE_WINDOW, id.type);
-  aura::Window* window = content::DesktopMediaID::GetAuraWindowById(id);
-  if (!window)
-    return gfx::ImageSkia();
-
-  const gfx::ImageSkia* icon_image_ptr =
-      window->GetProperty(aura::client::kWindowIconKey);
-
-  return icon_image_ptr ? *icon_image_ptr : gfx::ImageSkia();
+  // TODO(tonikitoo): can we make the implementation of
+  // chrome/browser/media/webrtc/window_icon_util_chromeos.cc generic
+  // enough so we can reuse it here?
+  NOTIMPLEMENTED();
+  return gfx::ImageSkia();
 }