Add ink drop ripple to shelf overflow button

ash/test/shelf_view_test_api.cc

Index: ash/test/shelf_view_test_api.cc
diff --git a/ash/test/shelf_view_test_api.cc b/ash/test/shelf_view_test_api.cc
index e42d96dacee95dc3534bf96c4ce7b2177c344230..855c843f6e256de8d5ce887b79967c1e68cee28d 100644
--- a/ash/test/shelf_view_test_api.cc
+++ b/ash/test/shelf_view_test_api.cc
@@ -71,6 +71,11 @@ void ShelfViewTestAPI::ShowOverflowBubble() {
     shelf_view_->ToggleOverflowBubble();
 }
 
+void ShelfViewTestAPI::HideOverflowBubble() {
+  if (shelf_view_->IsShowingOverflowBubble())
+    shelf_view_->ToggleOverflowBubble();
+}
+
 const gfx::Rect& ShelfViewTestAPI::GetBoundsByIndex(int index) {
   return shelf_view_->view_model_->view_at(index)->bounds();
 }
@@ -109,6 +114,10 @@ OverflowBubble* ShelfViewTestAPI::overflow_bubble() {
   return shelf_view_->overflow_bubble_.get();
 }
 
+OverflowButton* ShelfViewTestAPI::overflow_button() const {
+  return shelf_view_->overflow_button_;
+}
+
 ShelfTooltipManager* ShelfViewTestAPI::tooltip_manager() {
   return &shelf_view_->tooltip_;
 }