Remove UserGestureUtilizedCallback, it's unused outside of tests

third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp

 // Copyright 2015 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 "modules/presentation/PresentationRequest.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 117 matching lines @@
   // object but still has listeners registered.
   return GetExecutionContext() && HasEventListeners();
 }
 
 ScriptPromise PresentationRequest::start(ScriptState* script_state) {
   Settings* context_settings = GetSettings(GetExecutionContext());
   bool is_user_gesture_required =
       !context_settings ||
       context_settings->GetPresentationRequiresUserGesture();
 
-  if (is_user_gesture_required && !UserGestureIndicator::UtilizeUserGesture())
+  if (is_user_gesture_required &&
+      !UserGestureIndicator::ProcessingUserGesture())
     return ScriptPromise::RejectWithDOMException(
         script_state,
         DOMException::Create(
             kInvalidAccessError,
             "PresentationRequest::start() requires user gesture."));
 
   WebPresentationClient* client = PresentationClient(GetExecutionContext());
   if (!client)
     return ScriptPromise::RejectWithDOMException(
         script_state,
@@ skipping 81 matching lines @@
   if (execution_context->IsSecureContext()) {
     UseCounter::Count(execution_context,
                       UseCounter::kPresentationRequestSecureOrigin);
   } else {
     UseCounter::Count(execution_context,
                       UseCounter::kPresentationRequestInsecureOrigin);
   }
 }
 
 }  // namespace blink