SV Test

ash/system/fractional_view/tray_scale.h

Index: ash/system/fractional_view/tray_scale.h
diff --git a/ash/system/fractional_view/tray_scale.h b/ash/system/fractional_view/tray_scale.h
new file mode 100644
index 0000000000000000000000000000000000000000..f9b33bada01338a35e1e00f21029daa61cb24b64
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+++ b/ash/system/fractional_view/tray_scale.h
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+
+// 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 ASH_SYSTEM_FRACTIONAL_VIEW_TRAY_SCALE_H_
+#define ASH_SYSTEM_FRACTIONAL_VIEW_TRAY_SCALE_H_
+
+#include <stdint.h>
+
+#include "ash/ash_export.h"
+#include "ash/system/tray/tray_image_item.h"
+#include "base/macros.h"
+#include "ui/display/display_observer.h"
+
+namespace ash {
+namespace tray {
+class ScaleView;
+class ScaleDetailedView;
+}
+
+// The system tray item for audio input and output.
+class ASH_EXPORT TrayScale : public TrayImageItem,
+                             public display::DisplayObserver {
+ public:
+  explicit TrayScale(SystemTray* system_tray);
+  ~TrayScale() override;
+
+ private:
+  // Overridden from display::DisplayObserver.
+  void OnDisplayAdded(const display::Display& new_display) override;
+  void OnDisplayRemoved(const display::Display& old_display) override;
+  void OnDisplayMetricsChanged(const display::Display& display,
+                               uint32_t changed_metrics) override;
+
+  // Overridden from TrayImageItem.
+  bool GetInitialVisibility() override;
+
+  // Overridden from SystemTrayItem.
+  views::View* CreateDefaultView(LoginStatus status) override;
+  views::View* CreateDetailedView(LoginStatus status) override;
+  void DestroyDefaultView() override;
+  void DestroyDetailedView() override;
+  bool ShouldShowShelf() const override;
+
+  tray::ScaleView* scale_view_;
+
+  tray::ScaleDetailedView* scale_detail_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrayScale);
+};
+
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_FRACTIONAL_VIEW_TRAY_SCALE_H_