chromeos: Add SurfaceServiceProvider.

ash/surfaces/test_shell_surface_overlay_view.h

+// 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 ASH_SURFACES_TEST_SHELL_SURFACE_OVERLAY_VIEW_H_
+#define ASH_SURFACES_TEST_SHELL_SURFACE_OVERLAY_VIEW_H_
+
+#include "ash/wm/overlay_event_filter.h"
+#include "base/compiler_specific.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+#include "ui/views/widget/widget_delegate.h"
+
+namespace ash {
+
+class TestShellSurfaceOverlayView : public views::WidgetDelegateView,
+                                    public OverlayEventFilter::Delegate {
+ public:
+  TestShellSurfaceOverlayView();
+  ~TestShellSurfaceOverlayView() override;
+
+  // Overridden from views::View:
+  void OnPaint(gfx::Canvas* canvas) override;
+
+  // Overridden from views::WidgetDelegate:
+  void WindowClosing() override;
+
+  // Overridden from ash::OverlayEventFilter::Delegate:
+  void Cancel() override;
+  bool IsCancelingKeyEvent(ui::KeyEvent* event) override;
+  aura::Window* GetWindow() override;
+
+  // Shows the test shell surface overlay.
+  static void Show();
+
+  // Shows the test shell surface overlay in fullscreen mode.
+  static void ShowFullscreen();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestShellSurfaceOverlayView);
+};
+
+}  // namespace ash
+
+#endif  // ASH_SURFACES_TEST_SHELL_SURFACE_OVERLAY_VIEW_H_