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

components/mus/common/BUILD.gn

Index: components/mus/common/BUILD.gn
diff --git a/components/mus/common/BUILD.gn b/components/mus/common/BUILD.gn
index d0cc5d7152c9284f9d0b169e5c9a37aa093e101a..6f765c1e7c599405c280450db5fc7fa201e3bec9 100644
--- a/components/mus/common/BUILD.gn
+++ b/components/mus/common/BUILD.gn
@@ -2,16 +2,49 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("common") {
+import("//testing/test.gni")
+
+component("mus_common") {
   sources = [
     "args.cc",
     "args.h",
+    "event_param_traits.cc",
+    "event_param_traits.h",
+    "event_param_traits_macros.h",
+    "mus_common_export.h",
     "transient_window_utils.h",
     "types.h",
     "util.h",
     "window_tracker.h",
   ]
+
+  defines = [ "MUS_IPC_IMPLEMENTATION" ]
+
   deps = [
     "//components/mus/public/interfaces",
+    "//ipc:ipc",
+    "//mojo/public/c/system:for_component",
+    "//ui/events:events",
+    "//ui/gfx/ipc",
+  ]
+}
+
+test("mus_common_unittests") {
+  sources = [
+    "event_param_traits_unittest.cc",
+  ]
+  public_deps = [
+    ":mus_common",
+  ]
+  deps = [
+    "//base",
+    "//base/test:run_all_unittests",
+    "//base/test:test_config",
+    "//ipc:ipc",
+    "//mojo/edk/test:test_support",
+    "//testing/gtest",
+    "//ui/events:events",
+    "//ui/gfx:test_support",
+    "//ui/gfx/ipc",
   ]
 }