Reland: Move TouchSelectionController from content to ui

ui/base/touch/touch_editing_controller.h

Index: ui/base/touch/touch_editing_controller.h
diff --git a/ui/base/touch/touch_editing_controller.h b/ui/base/touch/touch_editing_controller.h
index c8c531d74e1900576add497ca0b34f32974cc9fc..e4f5205b4f6c9c8c9a94c2653cd1efcc538296d9 100644
--- a/ui/base/touch/touch_editing_controller.h
+++ b/ui/base/touch/touch_editing_controller.h
@@ -6,40 +6,14 @@
 #define UI_BASE_TOUCH_TOUCH_EDITING_CONTROLLER_H_
 
 #include "ui/base/models/simple_menu_model.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect.h"
 
-namespace ui {
-
-// Bound of a selected region.
-struct UI_BASE_EXPORT SelectionBound {
- public:
-  enum Type {
-    LEFT,
-    RIGHT,
-    CENTER,
-    EMPTY,
-    LAST = EMPTY
-  };
-
-  SelectionBound();
-  ~SelectionBound();
-
-  int GetHeight() const;
+namespace gfx {
+class Point;
+class Rect;
+}
 
-  Type type;
-
-  gfx::Point edge_top;
-  gfx::Point edge_bottom;
-};
-
-UI_BASE_EXPORT bool operator==(const SelectionBound& lhs,
-                               const SelectionBound& rhs);
-UI_BASE_EXPORT bool operator!=(const SelectionBound& lhs,
-                               const SelectionBound& rhs);
-
-UI_BASE_EXPORT gfx::Rect RectBetweenSelectionBounds(const SelectionBound& b1,
-                                                    const SelectionBound& b2);
+namespace ui {
+class SelectionBound;
 
 // An interface implemented by widget that has text that can be selected/edited
 // using touch.