Get frecon working with mustash.

chrome/browser/chromeos/dbus/mus_console_service_provider_delegate.h

+// Copyright 2017 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_DBUS_MUS_CONSOLE_SERVICE_PROVIDER_DELEGATE_H_
+#define CHROME_BROWSER_CHROMEOS_DBUS_MUS_CONSOLE_SERVICE_PROVIDER_DELEGATE_H_
+
+#include "base/macros.h"
+#include "chromeos/dbus/services/console_service_provider.h"
+#include "services/ui/public/interfaces/display/display_controller.mojom.h"
+
+namespace chromeos {
+
+// An implementation of ConsoleServiceProvider::Delegate that communicates with
+// mus-ws via IPC.
+class MusConsoleServiceProviderDelegate
+    : public ConsoleServiceProvider::Delegate {
+ public:
+  MusConsoleServiceProviderDelegate();
+  ~MusConsoleServiceProviderDelegate() override;
+
+  // ConsoleServiceProvider::Delegate overrides:
+  void TakeDisplayOwnership(const UpdateOwnershipCallback& callback) override;

[sky, 2017/01/24 18:59:03]

I'm not familiar with ConsoleServiceProvider::Delegate. Is ok that the callback
is async?

[kylechar, 2017/01/24 19:17:31]

Yep, DisplayConfigurator::TakeControl/RelinquishControl are async already so
thankfully this is easy.

+  void ReleaseDisplayOwnership(
+      const UpdateOwnershipCallback& callback) override;
+
+ private:
+  void ConnectDisplayControllerIfNecessary();
+
+  // TODO(kylechar): Can we have one DisplayController for Chrome somewhere?
+  display::mojom::DisplayControllerPtr display_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MusConsoleServiceProviderDelegate);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_DBUS_MUS_CONSOLE_SERVICE_PROVIDER_DELEGATE_H_