Adds a porting layer so aura can be made to work with mus

ui/aura/window_port_aura.h

Index: ui/aura/window_port_aura.h
diff --git a/ui/aura/window_port_aura.h b/ui/aura/window_port_aura.h
new file mode 100644
index 0000000000000000000000000000000000000000..772b5a10f039e60dd2a92175c82463a15bbf244b
--- /dev/null
+++ b/ui/aura/window_port_aura.h
@@ -0,0 +1,44 @@
+// 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.
+
+#ifndef UI_AURA_WINDOW_PORT_AURA_H_
+#define UI_AURA_WINDOW_PORT_AURA_H_
+
+#include "base/macros.h"
+#include "ui/aura/window_port.h"
+
+namespace aura {
+
+class Window;
+
+// WindowPort implementation for classic aura, e.g. not mus.
+class AURA_EXPORT WindowPortAura : public WindowPort {
+ public:
+  explicit WindowPortAura(Window* window);
+  ~WindowPortAura() override;
+
+  // WindowPort:
+  std::unique_ptr<WindowPortInitData> Init(Window* window) override;
+  void OnInitDone(std::unique_ptr<WindowPortInitData> init_data) override;
+  void OnDeviceScaleFactorChanged(float device_scale_factor) override;
+  void OnWillAddChild(Window* child) override;
+  void OnWillRemoveChild(Window* child) override;
+  void OnWillMoveChild(size_t current_index, size_t dest_index) override;
+  void OnVisibilityChanged(bool visible) override;
+  void OnDidChangeBounds(const gfx::Rect& old_bounds,
+                         const gfx::Rect& new_bounds) override;
+  std::unique_ptr<WindowPortPropertyData> OnWillChangeProperty(
+      const void* key) override;
+  void OnPropertyChanged(const void* key,
+                         std::unique_ptr<WindowPortPropertyData> data) override;
+
+ private:
+  Window* window_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowPortAura);
+};
+
+}  // namespace aura
+
+#endif  // UI_AURA_WINDOW_PORT_AURA_H_