Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/size_f.h

 // 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.
 
-#ifndef UI_GFX_SIZE_F_H_
-#define UI_GFX_SIZE_F_H_
+#ifndef UI_GFX_GEOMETRY_SIZE_F_H_
+#define UI_GFX_GEOMETRY_SIZE_F_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "ui/gfx/geometry/size_base.h"
 #include "ui/gfx/gfx_export.h"
-#include "ui/gfx/size_base.h"
 
 namespace gfx {
 
 // A floating version of gfx::Size.
 class GFX_EXPORT SizeF : public SizeBase<SizeF, float> {
  public:
   SizeF() : SizeBase<SizeF, float>(0, 0) {}
   SizeF(float width, float height) : SizeBase<SizeF, float>(width, height) {}
   ~SizeF() {}
 
@@ skipping 21 matching lines @@
 inline SizeF ScaleSize(const SizeF& p, float scale) {
   return ScaleSize(p, scale, scale);
 }
 
 #if !defined(COMPILER_MSVC)
 extern template class SizeBase<SizeF, float>;
 #endif
 
 }  // namespace gfx
 
-#endif  // UI_GFX_SIZE_F_H_
+#endif  // UI_GFX_GEOMETRY_SIZE_F_H_