Add VectorIconButton functionality to ImageButton.

ui/views/controls/button/vector_icon_button_delegate.h

Index: ui/views/controls/button/vector_icon_button_delegate.h
diff --git a/ui/views/controls/button/vector_icon_button_delegate.h b/ui/views/controls/button/vector_icon_button_delegate.h
deleted file mode 100644
index e4cccaa6790506ac8d34b31718faa0bb77b4695b..0000000000000000000000000000000000000000
--- a/ui/views/controls/button/vector_icon_button_delegate.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// 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_CONTROLS_BUTTON_VECTOR_ICON_DELEGATE_BUTTON_H_
-#define UI_VIEWS_CONTROLS_BUTTON_VECTOR_ICON_DELEGATE_BUTTON_H_
-
-#include "third_party/skia/include/core/SkColor.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/views_export.h"
-
-namespace views {
-
-// A ButtonListener that also provides a color to use for drawing an icon.
-class VIEWS_EXPORT VectorIconButtonDelegate : public ButtonListener {
- public:
-  virtual SkColor GetVectorIconBaseColor() const;
-
- protected:
-  ~VectorIconButtonDelegate() override {}
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_BUTTON_VECTOR_ICON_BUTTON_DELEGATE_H_