Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/rect_f.h

Index: ui/gfx/geometry/rect_f.h
diff --git a/ui/gfx/rect_f.h b/ui/gfx/geometry/rect_f.h
similarity index 92%
copy from ui/gfx/rect_f.h
copy to ui/gfx/geometry/rect_f.h
index 09de529a6278eb46adeaf6b9bd5ba556b9b8a74c..50ea76bff9f3c055549bbb8b4a79da9949f9c2dd 100644
--- a/ui/gfx/rect_f.h
+++ b/ui/gfx/geometry/rect_f.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_GFX_RECT_F_H_
-#define UI_GFX_RECT_F_H_
+#ifndef UI_GFX_GEOMETRY_RECT_F_H_
+#define UI_GFX_GEOMETRY_RECT_F_H_
 
 #include <string>
 
-#include "ui/gfx/point_f.h"
-#include "ui/gfx/rect_base.h"
-#include "ui/gfx/size_f.h"
-#include "ui/gfx/vector2d_f.h"
+#include "ui/gfx/geometry/point_f.h"
+#include "ui/gfx/geometry/rect_base.h"
+#include "ui/gfx/geometry/size_f.h"
+#include "ui/gfx/geometry/vector2d_f.h"
 
 namespace gfx {
 
@@ -110,4 +110,4 @@ extern template class RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>;
 
 }  // namespace gfx
 
-#endif  // UI_GFX_RECT_F_H_
+#endif  // UI_GFX_GEOMETRY_RECT_F_H_