Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/rect.h

Index: ui/gfx/geometry/rect.h
diff --git a/ui/gfx/rect.h b/ui/gfx/geometry/rect.h
similarity index 94%
copy from ui/gfx/rect.h
copy to ui/gfx/geometry/rect.h
index df7f9aac366c9bd39ce5c03a0202c7776805a4e7..7272a1c2f6275ca779bf08a5ebbdd803029685b9 100644
--- a/ui/gfx/rect.h
+++ b/ui/gfx/geometry/rect.h
@@ -9,17 +9,17 @@
 // rectangles with negative width and/or height), but there will be assertions
 // in the operations (such as Contains()) to complain in this case.
 
-#ifndef UI_GFX_RECT_H_
-#define UI_GFX_RECT_H_
+#ifndef UI_GFX_GEOMETRY_RECT_H_
+#define UI_GFX_GEOMETRY_RECT_H_
 
 #include <cmath>
 #include <string>
 
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect_base.h"
-#include "ui/gfx/rect_f.h"
-#include "ui/gfx/size.h"
-#include "ui/gfx/vector2d.h"
+#include "ui/gfx/geometry/point.h"
+#include "ui/gfx/geometry/rect_base.h"
+#include "ui/gfx/geometry/rect_f.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/geometry/vector2d.h"
 
 #if defined(OS_WIN)
 typedef struct tagRECT RECT;
@@ -142,4 +142,4 @@ extern template class RectBase<Rect, Point, Size, Insets, Vector2d, int>;
 
 }  // namespace gfx
 
-#endif  // UI_GFX_RECT_H_
+#endif  // UI_GFX_GEOMETRY_RECT_H_