Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/size.h

Index: ui/gfx/geometry/size.h
diff --git a/ui/gfx/size.h b/ui/gfx/geometry/size.h
similarity index 88%
copy from ui/gfx/size.h
copy to ui/gfx/geometry/size.h
index c96f5897f3b72d82770668dcc6828f17da4ce2ce..78984b073f493336b03712db46f1a3a53338261a 100644
--- a/ui/gfx/size.h
+++ b/ui/gfx/geometry/size.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_SIZE_H_
-#define UI_GFX_SIZE_H_
+#ifndef UI_GFX_GEOMETRY_SIZE_H_
+#define UI_GFX_GEOMETRY_SIZE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "ui/gfx/geometry/size_base.h"
+#include "ui/gfx/geometry/size_f.h"
 #include "ui/gfx/gfx_export.h"
-#include "ui/gfx/size_base.h"
-#include "ui/gfx/size_f.h"
 
 #if defined(OS_WIN)
 typedef struct tagSIZE SIZE;
@@ -64,4 +64,4 @@ extern template class SizeBase<Size, int>;
 
 }  // namespace gfx
 
-#endif  // UI_GFX_SIZE_H_
+#endif  // UI_GFX_GEOMETRY_SIZE_H_