Separate out Touch Selection Orientation enum

ui/touch_selection/touch_handle_orientation.h

+// 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_TOUCH_HANDLE_ORIENTATION_
+#define UI_TOUCH_SELECTION_TOUCH_HANDLE_ORIENTATION_
+
+namespace ui {
+
+// Orientation types for Touch handles, used for setting the type of
+// handle orientation on java and native side.
+
+// A Java counterpart will be generated for this enum.
+// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.ui.touch_selection
+enum class TouchHandleOrientation {
+  LEFT,
+  CENTER,
+  RIGHT,
+  UNDEFINED,
+};
+
+}  // namespace ui
+
+#endif  // UI_TOUCH_SELECTION_TOUCH_HANDLE_ORIENTATION_