Tweaks to "Allow InkDropRipple to co-exist with highlight or not exist at all."

ui/views/animation/test/empty_ink_drop_ripple_test_api.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/test/empty_ink_drop_ripple_test_api.h"
+
+namespace views {
+namespace test {
+
+EmptyInkDropRippleTestApi::EmptyInkDropRippleTestApi(
+    EmptyInkDropRipple* ink_drop_ripple)
+    : InkDropRippleTestApi(ink_drop_ripple) {}
+
+EmptyInkDropRippleTestApi::~EmptyInkDropRippleTestApi() {}
+
+float EmptyInkDropRippleTestApi::GetCurrentOpacity() const {
+  return 0;
+}
+
+std::vector<ui::LayerAnimator*> EmptyInkDropRippleTestApi::GetLayerAnimators() {
+  return std::vector<ui::LayerAnimator*>();
+}
+
+}  // namespace test
+}  // namespace views