Write mojom and StructTraits for display::GammaRampRGBEntry

ui/display/mojo/gamma_ramp_rgb_entry.typemap

Index: ui/display/mojo/gamma_ramp_rgb_entry.typemap
diff --git a/ui/display/mojo/gamma_ramp_rgb_entry.typemap b/ui/display/mojo/gamma_ramp_rgb_entry.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..2618fe9da0f8bf21186e7fd21577e5923962db5f
--- /dev/null
+++ b/ui/display/mojo/gamma_ramp_rgb_entry.typemap
@@ -0,0 +1,14 @@
+# Copyright 2017 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/display/mojo/gamma_ramp_rgb_entry.mojom"
+public_headers = [ "//ui/display/types/gamma_ramp_rgb_entry.h" ]
+traits_headers = [ "//ui/display/mojo/gamma_ramp_rgb_entry_struct_traits.h" ]
+sources = [
+  "//ui/display/mojo/gamma_ramp_rgb_entry_struct_traits.cc",
+]
+public_deps = [
+  "//ui/display",
+]
+type_mappings = [ "display.mojom.GammaRampRGBEntry=display::GammaRampRGBEntry" ]