[MD] some tweaks to download shelf

ui/views/animation/ink_drop_host_view.h

 // Copyright 2016 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_ANIMATION_INK_DROP_HOST_VIEW_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_HOST_VIEW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/geometry/size.h"
 #include "ui/views/animation/ink_drop_host.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 class InkDropAnimation;
 class InkDropHover;
 
 // A view that provides InkDropHost functionality.
 class VIEWS_EXPORT InkDropHostView : public views::View, public InkDropHost {
  public:
   InkDropHostView();
   ~InkDropHostView() override;
 
   // Overridden from views::InkDropHost:
   void AddInkDropLayer(ui::Layer* ink_drop_layer) override;
   void RemoveInkDropLayer(ui::Layer* ink_drop_layer) override;
   scoped_ptr<InkDropAnimation> CreateInkDropAnimation() const override;
   scoped_ptr<InkDropHover> CreateInkDropHover() const override;
 
+  void set_ink_drop_size(const gfx::Size& size) { ink_drop_size_ = size; }
+
  protected:
   // Overrideable methods to allow views to provide minor tweaks to the default
   // ink drop.
   virtual gfx::Point GetInkDropCenter() const;
   virtual SkColor GetInkDropBaseColor() const;
 
  private:
+  gfx::Size ink_drop_size_;
+
   DISALLOW_COPY_AND_ASSIGN(InkDropHostView);
 };
 }
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_HOST_VIEW_H_