views/mus: Move PlatformWindowMus into its own file.

ui/views/mus/platform_window_mus.h

Index: ui/views/mus/platform_window_mus.h
diff --git a/ui/views/mus/platform_window_mus.h b/ui/views/mus/platform_window_mus.h
new file mode 100644
index 0000000000000000000000000000000000000000..51caf6b17deccc295ca6bba95dbf593ea5eea6cb
--- /dev/null
+++ b/ui/views/mus/platform_window_mus.h
@@ -0,0 +1,70 @@
+// Copyright 2015 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_VIEWS_MUS_PLATFORM_WINDOW_MUS_H_
+#define UI_VIEWS_MUS_PLATFORM_WINDOW_MUS_H_
+
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "components/mus/public/cpp/window_observer.h"
+#include "ui/platform_window/platform_window.h"
+
+namespace views {
+
+class PlatformWindowMus : public ui::PlatformWindow,
+                          public mus::WindowObserver {
+ public:
+  PlatformWindowMus(ui::PlatformWindowDelegate* delegate,
+                    mus::Window* mus_window);
+  ~PlatformWindowMus() override;
+
+ private:
+  void SetShowState(mus::mojom::ShowState show_state);
+
+  // ui::PlatformWindow:
+  void Show() override;
+  void Hide() override;
+  void Close() override;
+
+  void SetBounds(const gfx::Rect& bounds) override;
+  gfx::Rect GetBounds() override;
+  void SetTitle(const base::string16& title) override;
+  void SetCapture() override;
+  void ReleaseCapture() override;
+  void ToggleFullscreen() override;
+  void Maximize() override;
+  void Minimize() override;
+  void Restore() override;
+  void SetCursor(ui::PlatformCursor cursor) override;
+  void MoveCursorTo(const gfx::Point& location) override;
+  void ConfineCursorToBounds(const gfx::Rect& bounds) override;
+  ui::PlatformImeController* GetPlatformImeController() override;
+
+  // mus::WindowObserver:
+  void OnWindowDestroyed(mus::Window* window) override;
+  void OnWindowBoundsChanged(mus::Window* window,
+                             const gfx::Rect& old_bounds,
+                             const gfx::Rect& new_bounds) override;
+  void OnWindowFocusChanged(mus::Window* gained_focus,
+                            mus::Window* lost_focus) override;
+  void OnWindowInputEvent(mus::Window* view,
+                          const mus::mojom::EventPtr& event) override;
+  void OnWindowSharedPropertyChanged(
+      mus::Window* window,
+      const std::string& name,
+      const std::vector<uint8_t>* old_data,
+      const std::vector<uint8_t>* new_data) override;
+
+  ui::PlatformWindowDelegate* delegate_;
+  mus::Window* mus_window_;
+  mus::mojom::ShowState show_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(PlatformWindowMus);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_MUS_PLATFORM_WINDOW_MUS_H_