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

ui/events/events.gyp

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 294 matching lines @@
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/ipc/ipc.gyp:ipc',
         'events_base',
       ],
       'defines': [
         'EVENTS_IPC_IMPLEMENTATION',
       ],
       'sources': [
         'ipc/latency_info_param_traits.cc',
         'ipc/latency_info_param_traits.h',
-        'ipc/latency_info_param_traits_macros.h',
       ],
     },
     {
       # GN version: //ui/events:test_support
       'target_name': 'events_test_support',
       'type': 'static_library',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/skia/skia.gyp:skia',
         '../gfx/gfx.gyp:gfx_geometry',
@@ skipping 56 matching lines @@
           'type': 'none',
           'variables': {
             'jni_gen_package': 'ui',
             'input_java_class': 'android/view/MotionEvent.class',
           },
           'includes': [ '../../build/jar_file_jni_generator.gypi' ],
         },
       ],
     }],
   ],
-}
+}