Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/insets_base.h

Index: ui/gfx/geometry/insets_base.h
diff --git a/ui/gfx/insets_base.h b/ui/gfx/geometry/insets_base.h
similarity index 94%
rename from ui/gfx/insets_base.h
rename to ui/gfx/geometry/insets_base.h
index da7aca103e549bce791d8fdff22a3c5894f5da53..751d5c11d9bc4c1f2959157b832d95e722c4be88 100644
--- a/ui/gfx/insets_base.h
+++ b/ui/gfx/geometry/insets_base.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_GFX_INSETS_BASE_H_
-#define UI_GFX_INSETS_BASE_H_
+#ifndef UI_GFX_GEOMETRY_INSETS_BASE_H_
+#define UI_GFX_GEOMETRY_INSETS_BASE_H_
 
 #include "ui/gfx/gfx_export.h"
 
@@ -77,4 +77,4 @@ class GFX_EXPORT InsetsBase {
 
 }  // namespace gfx
 
-#endif  // UI_GFX_INSETS_BASE_H_
+#endif  // UI_GFX_GEOMETRY_INSETS_BASE_H_