Use ink drop hover for focus states on toolbar buttons and location

ui/views/animation/test/test_ink_drop_delegate.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/test_ink_drop_delegate.h"
 
 namespace views {
 namespace test {
 
 TestInkDropDelegate::TestInkDropDelegate()
@@ skipping 10 matching lines @@
 }
 
 void TestInkDropDelegate::SetHovered(bool is_hovered) {
   is_hovered_ = is_hovered;
 }
 
 InkDropState TestInkDropDelegate::GetTargetInkDropState() const {
   return state_;
 }
 
+InkDrop* TestInkDropDelegate::GetInkDrop() {
+  return nullptr;
+}
+
 }  // namespace test
 }  // namespace views