Move geometric types to a separate, more lightweight target.

ui/gfx/size_conversions.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/size_conversions.h"
-
-#include "ui/gfx/safe_integer_conversions.h"
-
-namespace gfx {
-
-Size ToFlooredSize(const SizeF& size) {
-  int w = ToFlooredInt(size.width());
-  int h = ToFlooredInt(size.height());
-  return Size(w, h);
-}
-
-Size ToCeiledSize(const SizeF& size) {
-  int w = ToCeiledInt(size.width());
-  int h = ToCeiledInt(size.height());
-  return Size(w, h);
-}
-
-Size ToRoundedSize(const SizeF& size) {
-  int w = ToRoundedInt(size.width());
-  int h = ToRoundedInt(size.height());
-  return Size(w, h);
-}
-
-}  // namespace gfx
-