Record the fraction of the time without user input - Aura only

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 32 matching lines @@
 
 component("events_base") {
   sources = [
     "android/scroller.cc",
     "android/scroller.h",
     "base_event_utils.cc",
     "base_event_utils.h",
     "event_switches.cc",
     "event_switches.h",
     "events_base_export.h",
+    "fraction_of_time_without_user_input_recorder.cc",
+    "fraction_of_time_without_user_input_recorder.h",
     "gesture_curve.h",
     "gesture_event_details.cc",
     "gesture_event_details.h",
     "gestures/fling_curve.cc",
     "gestures/fling_curve.h",
     "keycodes/dom_us_layout_data.h",
     "keycodes/keyboard_code_conversion.cc",
     "keycodes/keyboard_code_conversion.h",
     "keycodes/keyboard_code_conversion_android.cc",
     "keycodes/keyboard_code_conversion_android.h",
@@ skipping 290 matching lines @@
 
 if (!is_ios) {
   test("events_unittests") {
     sources = [
       "android/scroller_unittest.cc",
       "cocoa/events_mac_unittest.mm",
       "event_dispatcher_unittest.cc",
       "event_processor_unittest.cc",
       "event_rewriter_unittest.cc",
       "event_unittest.cc",
+      "fraction_of_time_without_user_input_recorder_unittest.cc",
       "gesture_detection/bitset_32_unittest.cc",
       "gesture_detection/filtered_gesture_provider_unittest.cc",
       "gesture_detection/gesture_event_data_packet_unittest.cc",
       "gesture_detection/gesture_provider_unittest.cc",
       "gesture_detection/motion_event_buffer_unittest.cc",
       "gesture_detection/motion_event_generic_unittest.cc",
       "gesture_detection/snap_scroll_controller_unittest.cc",
       "gesture_detection/touch_disposition_gesture_filter_unittest.cc",
       "gesture_detection/velocity_tracker_unittest.cc",
       "gestures/fling_curve_unittest.cc",
@@ skipping 121 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" ]
   }
 }