It is time.

ui/views/controls/progress_bar.h

-// Copyright (c) 2011 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_CONTROLS_PROGRESS_BAR_H_
-#define UI_VIEWS_CONTROLS_PROGRESS_BAR_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/views/view.h"
-
-namespace views {
-
-// Progress bar is a control that indicates progress visually.
-class VIEWS_EXPORT ProgressBar : public View {
- public:
-  // The value range defaults to [0.0, 1.0].
-  ProgressBar();
-  virtual ~ProgressBar();
-
-  double current_value() const { return current_value_; }
-
-  // Gets a normalized current value in [0.0, 1.0] range based on current value
-  // range and the min/max display value range.
-  double GetNormalizedValue() const;
-
-  // Sets the inclusive range of values to be displayed.  Values outside of the
-  // range will be capped when displayed.
-  void SetDisplayRange(double min_display_value, double max_display_value);
-
-  // Sets the current value.  Values outside of the range [min_display_value_,
-  // max_display_value_] will be stored unmodified and capped for display.
-  void SetValue(double value);
-
-  // Sets the tooltip text.  Default behavior for a progress bar is to show no
-  // tooltip on mouse hover. Calling this lets you set a custom tooltip.  To
-  // revert to default behavior, call this with an empty string.
-  void SetTooltipText(const base::string16& tooltip_text);
-
-  // Overridden from View:
-  virtual bool GetTooltipText(const gfx::Point& p,
-                              base::string16* tooltip) const override;
-  virtual void GetAccessibleState(ui::AXViewState* state) override;
-
- private:
-  static const char kViewClassName[];
-
-  // Overridden from View:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual const char* GetClassName() const override;
-  virtual void OnPaint(gfx::Canvas* canvas) override;
-
-  // Inclusive range used when displaying values.
-  double min_display_value_;
-  double max_display_value_;
-
-  // Current value.  May be outside of [min_display_value_, max_display_value_].
-  double current_value_;
-
-  // Tooltip text.
-  base::string16 tooltip_text_;
-
-  DISALLOW_COPY_AND_ASSIGN(ProgressBar);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_PROGRESS_BAR_H_