Add MD ink drop ripple to shelf app items

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 <memory>
 
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 60 matching lines @@
   friend class test::InkDropHostViewTestApi;
 
   std::unique_ptr<InkDrop> ink_drop_;
 
   // Intentionally declared after |ink_drop_| so that it doesn't access a
   // destroyed |ink_drop_| during destruction.
   std::unique_ptr<InkDropGestureHandler> gesture_handler_;
 
   gfx::Size ink_drop_size_;
 
+  // Determines whether the view was already painting to layer before adding ink
+  // drop layer.
+  bool old_paint_to_layer_;
+
   bool destroying_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropHostView);
 };
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_HOST_VIEW_H_