Change mojo geometry structs from using type converters to StructTraits.

ui/views/mus/screen_mus.cc

Index: ui/views/mus/screen_mus.cc
diff --git a/ui/views/mus/screen_mus.cc b/ui/views/mus/screen_mus.cc
index 663b2f90dc13e408e9e12981b9e3db769eeca64e..cd36176fa0c39681bfb4fc90810034bbdfd46bf7 100644
--- a/ui/views/mus/screen_mus.cc
+++ b/ui/views/mus/screen_mus.cc
@@ -4,7 +4,6 @@
 
 #include "ui/views/mus/screen_mus.h"
 
-#include "mojo/converters/geometry/geometry_type_converters.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/connector.h"
 #include "ui/aura/window.h"
@@ -27,9 +26,8 @@ struct TypeConverter<views::WindowManagerFrameValues,
   static views::WindowManagerFrameValues Convert(
       const mus::mojom::FrameDecorationValuesPtr& input) {
     views::WindowManagerFrameValues result;
-    result.normal_insets = input->normal_client_area_insets.To<gfx::Insets>();
-    result.maximized_insets =
-        input->maximized_client_area_insets.To<gfx::Insets>();
+    result.normal_insets = input->normal_client_area_insets;
+    result.maximized_insets = input->maximized_client_area_insets;
     result.max_title_bar_button_width = input->max_title_bar_button_width;
     return result;
   }