Move final vector icons out of ui/gfx/vector_icons/ and remove the

ui/gfx/vector_icons_public.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_GFX_VECTOR_ICONS_PUBLIC_H_
-#define UI_GFX_VECTOR_ICONS_PUBLIC_H_
-
-#include "build/build_config.h"
-
-#if defined(USE_AURA) || (!defined(OS_IOS) && !defined(OS_ANDROID))
-#include "ui/gfx/vector_icons/vector_icons.h"
-#else
-// Define this type so non-views platforms will compile.
-namespace gfx {
-enum class VectorIconId {
-  VECTOR_ICON_NONE,
-};
-}  // namespace gfx
-#endif
-
-#endif  // UI_GFX_VECTOR_ICONS_PUBLIC_H_