Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/rect_conversions.cc

Index: ui/gfx/geometry/rect_conversions.cc
diff --git a/ui/gfx/rect_conversions.cc b/ui/gfx/geometry/rect_conversions.cc
similarity index 96%
rename from ui/gfx/rect_conversions.cc
rename to ui/gfx/geometry/rect_conversions.cc
index a54a49a23d6a4b0be93d1992d0f6c8e3ccef8681..cceeb83a0ae7b897070f0e0bab5b75c1a0448104 100644
--- a/ui/gfx/rect_conversions.cc
+++ b/ui/gfx/geometry/rect_conversions.cc
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/gfx/rect_conversions.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
-#include "ui/gfx/safe_integer_conversions.h"
+#include "ui/gfx/geometry/safe_integer_conversions.h"
 
 namespace gfx {