Remove UserGestureUtilizedCallback, it's unused outside of tests

third_party/WebKit/Source/core/html/media/AutoplayPolicy.cpp

 // Copyright 2017 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.
 
 #include "core/html/media/AutoplayPolicy.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ElementVisibilityObserver.h"
 #include "core/frame/ContentSettingsClient.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 193 matching lines @@
 
   return !element_->paused() && muted && IsLockedPendingUserGesture();
 }
 
 bool AutoplayPolicy::IsLockedPendingUserGesture() const {
   return locked_pending_user_gesture_;
 }
 
 void AutoplayPolicy::TryUnlockingUserGesture() {
   if (IsLockedPendingUserGesture() &&
-      UserGestureIndicator::UtilizeUserGesture()) {
+      UserGestureIndicator::ProcessingUserGesture()) {
     UnlockUserGesture();
   }
 }
 
 void AutoplayPolicy::UnlockUserGesture() {
   locked_pending_user_gesture_ = false;
   locked_pending_user_gesture_if_cross_origin_experiment_enabled_ = false;
 }
 
 bool AutoplayPolicy::IsGestureNeededForPlayback() const {
@@ skipping 67 matching lines @@
   return element_->can_autoplay_ && element_->paused_ && element_->Autoplay();
 }
 
 DEFINE_TRACE(AutoplayPolicy) {
   visitor->Trace(element_);
   visitor->Trace(autoplay_visibility_observer_);
   visitor->Trace(autoplay_uma_helper_);
 }
 
 }  // namespace blink