Add progress notification support to new-style notification.

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/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class LinearAnimation;
 }
 
 namespace views {
 
 // Progress bar is a control that indicates progress visually.
 class VIEWS_EXPORT ProgressBar : public View, public gfx::AnimationDelegate {
  public:
   // The preferred height parameter makes it easier to use a ProgressBar with
   // layout managers that size to preferred size.
-  explicit ProgressBar(int preferred_height = 5);
+  explicit ProgressBar(int preferred_height = 5,
+                       bool allow_round_corner = true);
   ~ProgressBar() override;
 
   // Overridden from View:
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   gfx::Size CalculatePreferredSize() const override;
   const char* GetClassName() const override;
   void OnPaint(gfx::Canvas* canvas) override;
 
   double current_value() const { return current_value_; }
 
@@ skipping 18 matching lines @@
 
   bool IsIndeterminate();
   void OnPaintIndeterminate(gfx::Canvas* canvas);
 
   // Current progress to display, should be in the range 0.0 to 1.0.
   double current_value_ = 0.0;
 
   // In DP, the preferred height of this progress bar.
   const int preferred_height_;
 
+  const bool allow_round_corner_;
+
   std::unique_ptr<gfx::LinearAnimation> indeterminate_bar_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgressBar);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_PROGRESS_BAR_H_