Revert of 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 6f765c1e7c599405c280450db5fc7fa201e3bec9..d0cc5d7152c9284f9d0b169e5c9a37aa093e101a 100644
--- a/components/mus/common/BUILD.gn
+++ b/components/mus/common/BUILD.gn
@@ -2,49 +2,16 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//testing/test.gni")
-
-component("mus_common") {
+source_set("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",
-  ]
-}