Moved ButtonInkDropDelegate logic into InkDropHostView and deleted InkDropDelegates.

ui/views/animation/test/test_ink_drop.h

+// 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.
+
+#ifndef UI_VIEWS_ANIMATION_TEST_INK_DROP_H_
+#define UI_VIEWS_ANIMATION_TEST_INK_DROP_H_
+
+#include "ui/views/animation/ink_drop.h"
+
+namespace views {
+namespace test {
+
+// A InkDrop test double that tracks the last requested state changes.
+//
+// NOTE: This does not auto transition between any of the InkDropStates.
+//
+class TestInkDrop : public InkDrop {
+ public:
+  TestInkDrop();
+  ~TestInkDrop() override;
+
+  bool is_hovered() const { return is_hovered_; }
+
+  InkDropState GetTargetInkDropState() const override;
+  void AnimateToState(InkDropState ink_drop_state) override;
+  void SnapToActivated() override;
+  void SetHovered(bool is_hovered) override;
+  void SetFocused(bool is_focused) override;
+
+ private:
+  InkDropState state_;
+  bool is_hovered_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestInkDrop);
+};
+
+}  // namespace test
+}  // namespace views
+
+#endif  // UI_VIEWS_ANIMATION_TEST_INK_DROP_H_