Moved ButtonInkDropDelegate logic into InkDropHostView and deleted InkDropDelegates.

ui/views/animation/test/ink_drop_host_view_test_api.h

Index: ui/views/animation/test/ink_drop_host_view_test_api.h
diff --git a/ui/views/animation/test/ink_drop_host_view_test_api.h b/ui/views/animation/test/ink_drop_host_view_test_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..07df159bafb0d63eb9fb1dddd5b38eb65042deb1
--- /dev/null
+++ b/ui/views/animation/test/ink_drop_host_view_test_api.h
@@ -0,0 +1,36 @@
+// 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_HOST_VIEW_TEST_API_H_
+#define UI_VIEWS_ANIMATION_TEST_INK_DROP_HOST_VIEW_TEST_API_H_
+
+#include <memory>
+#include <vector>
+
+#include "base/macros.h"
+#include "ui/views/animation/ink_drop.h"
+#include "ui/views/animation/ink_drop_host_view.h"
+
+namespace views {
+namespace test {
+
+// Test API to provide internal access to an InkDropHostView instance.
+class InkDropHostViewTestApi {
+ public:
+  explicit InkDropHostViewTestApi(InkDropHostView* host_view);
+  ~InkDropHostViewTestApi();
+
+  void SetInkDrop(std::unique_ptr<InkDrop> ink_drop);
+
+ private:
+  // The InkDropHostView to provide internal access to.
+  InkDropHostView* host_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(InkDropHostViewTestApi);
+};
+
+}  // namespace test
+}  // namespace views
+
+#endif  // UI_VIEWS_ANIMATION_TEST_INK_DROP_HOST_VIEW_TEST_API_H_