Make the material design ripple effect more visible on a quick action (single click or single tap)

ui/views/animation/ink_drop_animation_controller_impl.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_ANIMATION_CONTROLLER_IMPL_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 97 matching lines @@
   // from the InkDropHost.
   scoped_ptr<ui::Layer> root_layer_;
 
   // The current InkDropHover. Lazily created using CreateInkDropHover();
   scoped_ptr<InkDropHover> hover_;
 
   // The current InkDropAnimation. Created on demand using
   // CreateInkDropAnimation().
   scoped_ptr<InkDropAnimation> ink_drop_animation_;
 
+  // Tracks whether the InkDropAnimation can safely be destroyed when an
+  // InkDropState::HIDDEN animation completes.
+  bool can_destroy_after_hidden_animation_;
+
   // The timer used to delay the hover fade in after an ink drop animation.
   scoped_ptr<base::Timer> hover_after_animation_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropAnimationControllerImpl);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_