Added material design mouse hover feedback support.

ui/views/animation/ink_drop_host.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 UI_VIEWS_ANIMATION_INK_DROP_HOST_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_HOST_H_
 
 #include "base/macros.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/views/views_export.h"
@@ skipping 16 matching lines @@
   InkDropHost() {}
   virtual ~InkDropHost() {}
 
   // Adds the |ink_drop_layer| in to a visible layer tree.
   virtual void AddInkDropLayer(ui::Layer* ink_drop_layer) = 0;
 
   // Removes |ink_drop_layer| from the layer tree.
   virtual void RemoveInkDropLayer(ui::Layer* ink_drop_layer) = 0;
 
   // Returns the Point where the ink drop should be centered.
-  // TODO(varkha): This should be moved to InkDropConsumer.
   virtual gfx::Point CalculateInkDropCenter() const = 0;
 
+  // Returns true if the InkDropHover should be shown.
+  virtual bool ShouldShowInkDropHover() const = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDropHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_HOST_H_