Media Controls: move volume slider to modules/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlElementsHelper.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 "modules/media_controls/elements/MediaControlElementsHelper.h"
 
 #include "core/events/Event.h"
+#include "core/layout/LayoutSlider.h"
 #include "core/layout/api/LayoutSliderItem.h"
 
 namespace blink {
 
 // static
 bool MediaControlElementsHelper::IsUserInteractionEvent(Event* event) {
   const AtomicString& type = event->type();
   return type == EventTypeNames::mousedown || type == EventTypeNames::mouseup ||
          type == EventTypeNames::click || type == EventTypeNames::dblclick ||
          event->IsKeyboardEvent() || event->IsTouchEvent();
@@ skipping 22 matching lines @@
   const AtomicString& type = event->type();
   return type == EventTypeNames::mouseover ||
          type == EventTypeNames::mouseout ||
          type == EventTypeNames::mousemove ||
          type == EventTypeNames::pointerover ||
          type == EventTypeNames::pointerout ||
          type == EventTypeNames::pointermove;
 }
 
 }  // namespace blink