Implemented StructTraits for cc::CopyOutputResult

cc/ipc/BUILD.gn

Index: cc/ipc/BUILD.gn
diff --git a/cc/ipc/BUILD.gn b/cc/ipc/BUILD.gn
index 53b303a2ecf77f40dc608e77697c37090c7b8ca9..cf0c09543db736a8c9088acbea6323d79225ef3e 100644
--- a/cc/ipc/BUILD.gn
+++ b/cc/ipc/BUILD.gn
@@ -43,6 +43,7 @@ mojom("interfaces") {
     "compositor_frame.mojom",
     "compositor_frame_metadata.mojom",
     "copy_output_request.mojom",
+    "copy_output_result.mojom",
     "filter_operation.mojom",
     "filter_operations.mojom",
     "frame_sink_id.mojom",
@@ -103,6 +104,8 @@ cc_source_set("struct_traits") {
     "compositor_frame_metadata_struct_traits.h",
     "compositor_frame_struct_traits.cc",
     "compositor_frame_struct_traits.h",
+    "copy_output_result_struct_traits.cc",
+    "copy_output_result_struct_traits.h",
     "filter_operation_struct_traits.h",
     "filter_operations_struct_traits.h",
     "frame_sink_id_struct_traits.h",
@@ -117,6 +120,7 @@ cc_source_set("struct_traits") {
     "surface_info_struct_traits.h",
     "surface_reference_struct_traits.h",
     "surface_sequence_struct_traits.h",
+    "texture_mailbox_struct_traits.h",
     "transferable_resource_struct_traits.cc",
     "transferable_resource_struct_traits.h",
   ]
@@ -127,12 +131,14 @@ cc_source_set("struct_traits") {
     "//cc/surfaces:surface_id",
     "//gpu/ipc/common:struct_traits",
     "//mojo/common:struct_traits",
+    "//skia/public/interfaces",
     "//skia/public/interfaces:struct_traits",
     "//ui/events:events_base",
     "//ui/events/mojo:struct_traits",
     "//ui/gfx",
     "//ui/gfx:selection_bound",
     "//ui/gfx/geometry/mojo:struct_traits",
+    "//ui/gfx/mojo:mojo",
     "//ui/gfx/mojo:struct_traits",
   ]
 }