Implement RenderPassId StructTrait

components/mus/public/cpp/surfaces/surfaces_utils.cc

Index: components/mus/public/cpp/surfaces/surfaces_utils.cc
diff --git a/components/mus/public/cpp/surfaces/surfaces_utils.cc b/components/mus/public/cpp/surfaces/surfaces_utils.cc
index e3a1702f2b93287ec267c68565191d878a1668f5..31f87aa839890297774e9fbdac5b873278102678 100644
--- a/components/mus/public/cpp/surfaces/surfaces_utils.cc
+++ b/components/mus/public/cpp/surfaces/surfaces_utils.cc
@@ -12,7 +12,6 @@
 
 using mus::mojom::Pass;
 using mus::mojom::PassPtr;
-using mus::mojom::RenderPassId;
 using mus::mojom::SharedQuadState;
 using mus::mojom::SharedQuadStatePtr;
 
@@ -33,10 +32,10 @@ SharedQuadStatePtr CreateDefaultSQS(const gfx::Size& size) {
 
 PassPtr CreateDefaultPass(int id, const gfx::Rect& rect) {
   PassPtr pass = Pass::New();
-  RenderPassId render_pass_id;
+  cc::RenderPassId render_pass_id;
   render_pass_id.layer_id = 1;
   render_pass_id.index = id;
-  pass->id = render_pass_id.Clone();
+  pass->id = render_pass_id;
   pass->output_rect = Rect::From(rect);
   pass->damage_rect = Rect::From(rect);
   pass->transform_to_root_target = Transform::From(gfx::Transform());