Struct traits for gfx::Range and gfx::RangeF.

ui/gfx/range/mojo/range.typemap

Index: ui/gfx/range/mojo/range.typemap
diff --git a/ui/gfx/range/mojo/range.typemap b/ui/gfx/range/mojo/range.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..ebf07d147840d51f82c97ed1c3c5ed7804dbe0f8
--- /dev/null
+++ b/ui/gfx/range/mojo/range.typemap
@@ -0,0 +1,17 @@
+# Copyright 2016 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.
+
+mojom = "//ui/gfx/range/mojo/range.mojom"
+public_headers = [
+  "//ui/gfx/range/range.h",
+  "//ui/gfx/range/range_f.h",
+]
+traits_headers = [ "//ui/gfx/range/mojo/range_struct_traits.h" ]
+deps = [
+  "//ui/gfx/range/mojo:struct_traits",
+]
+type_mappings = [
+  "gfx.mojom.Range=gfx::Range",
+  "gfx.mojom.RangeF=gfx::RangeF",
+]