Revert of Move TouchSelectionController from content to ui

ui/touch_selection/ui_touch_selection_export.h

Index: ui/touch_selection/ui_touch_selection_export.h
diff --git a/ui/touch_selection/ui_touch_selection_export.h b/ui/touch_selection/ui_touch_selection_export.h
deleted file mode 100644
index e1f80bbcccf73d49dac670fab22f9cb942593849..0000000000000000000000000000000000000000
--- a/ui/touch_selection/ui_touch_selection_export.h
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2014 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_TOUCH_SELECTION_UI_TOUCH_SELECTION_EXPORT_H_
-#define UI_TOUCH_SELECTION_UI_TOUCH_SELECTION_EXPORT_H_
-
-// Defines UI_TOUCH_SELECTION_EXPORT so that functionality implemented by the UI
-// touch selection module can be exported to consumers.
-
-#if defined(COMPONENT_BUILD)
-
-#if defined(WIN32)
-
-#if defined(UI_TOUCH_SELECTION_IMPLEMENTATION)
-#define UI_TOUCH_SELECTION_EXPORT __declspec(dllexport)
-#else
-#define UI_TOUCH_SELECTION_EXPORT __declspec(dllimport)
-#endif
-
-#else  // !defined(WIN32)
-
-#if defined(UI_TOUCH_SELECTION_IMPLEMENTATION)
-#define UI_TOUCH_SELECTION_EXPORT __attribute__((visibility("default")))
-#else
-#define UI_TOUCH_SELECTION_EXPORT
-#endif
-
-#endif
-
-#else  // !defined(COMPONENT_BUILD)
-
-#define UI_TOUCH_SELECTION_EXPORT
-
-#endif
-
-#endif  // UI_TOUCH_SELECTION_UI_TOUCH_SELECTION_EXPORT_H_