Re-adding and fixing StructTraitsTest for events and latency.

ui/events/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
 
@@ skipping 389 matching lines @@
 
     if (!is_ios) {
       sources += [
         "blink/blink_event_util_unittest.cc",
         "blink/input_handler_proxy_unittest.cc",
         "blink/input_scroll_elasticity_controller_unittest.cc",
         "blink/web_input_event_traits_unittest.cc",
         "blink/web_input_event_unittest.cc",
         "devices/mojo/device_struct_traits_unittest.cc",
         "gestures/blink/web_gesture_curve_impl_unittest.cc",
+        "mojo/struct_traits_unittest.cc",
       ]
       deps += [
         "//cc",
         "//ipc:test_support",
         "//mojo/public/cpp/bindings",
         "//third_party/WebKit/public:blink_headers",
         "//ui/display",
         "//ui/events/blink",
         "//ui/events/devices/mojo:test_interfaces",
         "//ui/events/gestures/blink",
@@ skipping 75 matching lines @@
   generate_jar_jni("motionevent_jni_headers") {
     jni_package = "ui"
     classes = [ "android/view/MotionEvent.class" ]
   }
 
   generate_jar_jni("keyevent_jni_headers") {
     jni_package = "ui"
     classes = [ "android/view/KeyEvent.class" ]
   }
 }