Add ink drop ripple to shelf overflow button

ui/views/controls/button/custom_button.cc

 // Copyright (c) 2012 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.
 
 #include "ui/views/controls/button/custom_button.h"
 
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
@@ skipping 166 matching lines @@
           ink_drop()->GetTargetInkDropState() ==
               views::InkDropState::ACTION_PENDING) {
         AnimateInkDrop(views::InkDropState::HIDDEN, &event);
       }
     }
   }
   return true;
 }
 
 void CustomButton::OnMouseReleased(const ui::MouseEvent& event) {
+  const bool was_pressed = state_ == STATE_PRESSED;
+
   if (state_ != STATE_DISABLED) {
     if (!HitTestPoint(event.location())) {
       SetState(STATE_NORMAL);
     } else {
       SetState(STATE_HOVERED);
       if (IsTriggerableEvent(event) && notify_action_ == NOTIFY_ON_RELEASE) {
         NotifyClick(event);
         // NOTE: We may be deleted at this point (by the listener's notification
         // handler).
         return;
       }
     }
   }
-  if (notify_action_ == NOTIFY_ON_RELEASE)
+  if (notify_action_ == NOTIFY_ON_RELEASE && was_pressed)
     OnClickCanceled(event);
 }
 
 void CustomButton::OnMouseCaptureLost() {
   // Starting a drag results in a MouseCaptureLost. Reset button state.
   // TODO(varkha) While in drag only reset the state with Material Design.
   // The same logic may applies everywhere so gather any feedback and update.
   bool reset_button_state =
       !InDrag() || ui::MaterialDesignController::IsModeMaterial();
   if (state_ != STATE_DISABLED && reset_button_state)
@@ skipping 258 matching lines @@
   Button::NotifyClick(event);
 }
 
 void CustomButton::OnClickCanceled(const ui::Event& event) {
   AnimateInkDrop(views::InkDropState::HIDDEN,
                  ui::LocatedEvent::FromIfValid(&event));
   Button::OnClickCanceled(event);
 }
 
 }  // namespace views