Add MD ink drop ripple to app list button

ui/views/animation/ink_drop_host_view.cc

 // 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.
 
 #include "ui/views/animation/ink_drop_host_view.h"
 
 #include "ui/events/event.h"
 #include "ui/events/scoped_target_handler.h"
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ skipping 224 matching lines @@
 
 SkColor InkDropHostView::GetInkDropBaseColor() const {
   NOTREACHED();
   return gfx::kPlaceholderColor;
 }
 
 bool InkDropHostView::ShouldShowInkDropForFocus() const {
   return false;
 }
 
-void InkDropHostView::SetHasInkDrop(bool has_an_ink_drop) {
-  if (has_an_ink_drop) {
+void InkDropHostView::SetInkDropMode(InkDropMode ink_drop_mode) {
+  if (ink_drop_mode == InkDropMode::OFF)
+    ink_drop_.reset(new InkDropStub());
+  else
     ink_drop_.reset(new InkDropImpl(this));
-    if (!gesture_handler_)
+
+  if (ink_drop_mode == InkDropMode::ON) {
+    if (gesture_handler_)
+      gesture_handler_->SetInkDrop(ink_drop_.get());
+    else
       gesture_handler_.reset(new InkDropGestureHandler(this, ink_drop_.get()));
-    else
-      gesture_handler_->SetInkDrop(ink_drop_.get());
   } else {
     gesture_handler_.reset();
-    ink_drop_.reset(new InkDropStub());
   }
 }
 
 }  // namespace views