Move geometric types to a separate, more lightweight target.

ui/gfx/geometry/safe_integer_conversions.h

Index: ui/gfx/geometry/safe_integer_conversions.h
diff --git a/ui/gfx/safe_integer_conversions.h b/ui/gfx/geometry/safe_integer_conversions.h
similarity index 88%
copy from ui/gfx/safe_integer_conversions.h
copy to ui/gfx/geometry/safe_integer_conversions.h
index 523b1f3441fdfa5a5da0468a7656c0dc4a6bbbbb..4d289ecabafb665386b25ea58704cea22d737440 100644
--- a/ui/gfx/safe_integer_conversions.h
+++ b/ui/gfx/geometry/safe_integer_conversions.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_SAFE_INTEGER_CONVERSIONS_H_
-#define UI_GFX_SAFE_INTEGER_CONVERSIONS_H_
+#ifndef UI_GFX_GEOMETRY_SAFE_INTEGER_CONVERSIONS_H_
+#define UI_GFX_GEOMETRY_SAFE_INTEGER_CONVERSIONS_H_
 
 #include <cmath>
 #include <limits>
@@ -51,4 +51,4 @@ inline bool IsExpressibleAsInt(float value) {
 
 }  // namespace gfx
 
-#endif  // UI_GFX_SAFE_INTEGER_CONVERSIONS_H_
+#endif  // UI_GFX_GEOMETRY_SAFE_INTEGER_CONVERSIONS_H_