Revert of Move ui/gfx/codec/ into its own component.

ui/gfx/codec/codec_export.h

Index: ui/gfx/codec/codec_export.h
diff --git a/ui/gfx/codec/codec_export.h b/ui/gfx/codec/codec_export.h
deleted file mode 100644
index c56a070f1fa4ec1bc670856d5be375e511800bd6..0000000000000000000000000000000000000000
--- a/ui/gfx/codec/codec_export.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2017 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_CODEC_CODEC_EXPORT_H_
-#define UI_GFX_CODEC_CODEC_EXPORT_H_
-
-#if defined(COMPONENT_BUILD)
-#if defined(WIN32)
-
-#if defined(CODEC_IMPLEMENTATION)
-#define CODEC_EXPORT __declspec(dllexport)
-#else
-#define CODEC_EXPORT __declspec(dllimport)
-#endif  // defined(CODEC_IMPLEMENTATION)
-
-#else  // defined(WIN32)
-#if defined(CODEC_IMPLEMENTATION)
-#define CODEC_EXPORT __attribute__((visibility("default")))
-#else
-#define CODEC_EXPORT
-#endif
-#endif
-
-#else  // defined(COMPONENT_BUILD)
-#define CODEC_EXPORT
-#endif
-
-#endif  // UI_GFX_CODEC_CODEC_EXPORT_H_