IPC::ParamTraits for ui::Event (towards ui::Events over mojo IPC)

ui/events/ipc/BUILD.gn

Index: ui/events/ipc/BUILD.gn
diff --git a/ui/events/ipc/BUILD.gn b/ui/events/ipc/BUILD.gn
index f7eaf887b8095556cb6c70f5f106c0d4d5263e3d..321d886eba234610fd939f315671704b108bd067 100644
--- a/ui/events/ipc/BUILD.gn
+++ b/ui/events/ipc/BUILD.gn
@@ -7,6 +7,9 @@ import("//build/config/ui.gni")
 component("events_ipc") {
   output_name = "events_ipc"
   sources = [
+    "event_param_traits.cc",
+    "event_param_traits.h",
+    "event_param_traits_multi.h",
     "latency_info_param_traits.cc",
     "latency_info_param_traits.h",
   ]
@@ -16,6 +19,7 @@ component("events_ipc") {
   deps = [
     "//base",
     "//ipc",
-    "//ui/events:events_base",
+    "//ui/events:events",
+    "//ui/gfx/ipc",
   ]
 }