Move geometry types to a more central location.

mojo/services/native_viewport/native_viewport.mojom

Index: mojo/services/native_viewport/native_viewport.mojom
diff --git a/mojo/services/native_viewport/native_viewport.mojom b/mojo/services/native_viewport/native_viewport.mojom
index eef750c0e002cf391119c58bdd68c34b213c56a4..8e0edb559bbd51635a75401db316827930d96bc3 100644
--- a/mojo/services/native_viewport/native_viewport.mojom
+++ b/mojo/services/native_viewport/native_viewport.mojom
@@ -2,22 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module mojo {
-
-struct Point {
-  float x;
-  float y;
-};
+import "../../public/interfaces/geometry/geometry.mojom"
 
-struct Size {
-  float width;
-  float height;
-};
-
-struct Rect {
-  Point position;
-  Size size;
-};
+module mojo {
 
 struct KeyData {
   int32 key_code;