Makes touch event have a time from android

services/native_viewport/platform_viewport_android.cc

Index: services/native_viewport/platform_viewport_android.cc
diff --git a/services/native_viewport/platform_viewport_android.cc b/services/native_viewport/platform_viewport_android.cc
index 277007309fc0e78c280930a49b95ee431eaf6323..104c183cfd21e7cda56e694f200838b594b1f824 100644
--- a/services/native_viewport/platform_viewport_android.cc
+++ b/services/native_viewport/platform_viewport_android.cc
@@ -114,6 +114,7 @@ bool PlatformViewportAndroid::TouchEvent(JNIEnv* env,
                                          jfloat h_wheel,
                                          jfloat v_wheel) {
   mojo::EventPtr event(mojo::Event::New());
+  event->time_stamp = time_ms;
   event->action = MotionEventActionToEventType(masked_action);
   if (event->action == mojo::EVENT_TYPE_UNKNOWN)
     return false;