Added ui::test::MultiLayerAnimatorTestController and Delegate.

ui/views/animation/test/square_ink_drop_animation_test_api.h

 // Copyright 2015 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_SQUARE_INK_DROP_ANIMATION_TEST_API_H_
 #define UI_VIEWS_ANIMATION_TEST_SQUARE_INK_DROP_ANIMATION_TEST_API_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 24 matching lines @@
                                  InkDropTransforms* transforms_out) const;
   void CalculateRectTransforms(const gfx::Size& size,
                                float corner_radius,
                                InkDropTransforms* transforms_out) const;
 
   // InkDropAnimationTestApi:
   float GetCurrentOpacity() const override;
 
  protected:
   // InkDropAnimationTestApi:
-  std::vector<ui::LayerAnimator*> GetLayerAnimators() const override;
+  std::vector<ui::LayerAnimator*> GetLayerAnimators() override;
 
  private:
   SquareInkDropAnimation* ink_drop_animation() {
     return static_cast<const SquareInkDropAnimationTestApi*>(this)
         ->ink_drop_animation();
   }
 
   SquareInkDropAnimation* ink_drop_animation() const {
     return static_cast<SquareInkDropAnimation*>(
         InkDropAnimationTestApi::ink_drop_animation());
   }
 
   DISALLOW_COPY_AND_ASSIGN(SquareInkDropAnimationTestApi);
 };
 
 }  // namespace test
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_TEST_SQUARE_INK_DROP_ANIMATION_TEST_API_H_