Scale scrollbar in use-zoom-for-dsf mode

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 491 matching lines @@
 }
 
 PassRefPtrWillBeRawPtr<Scrollbar> FrameView::createScrollbar(ScrollbarOrientation orientation)
 {
     Element* customScrollbarElement = nullptr;
     LocalFrame* customScrollbarFrame = nullptr;
     if (shouldUseCustomScrollbars(customScrollbarElement, customScrollbarFrame))
         return LayoutScrollbar::createCustomScrollbar(this, orientation, customScrollbarElement, customScrollbarFrame);
 
     // Nobody set a custom style, so we just use a native scrollbar.
-    return Scrollbar::create(this, orientation, RegularScrollbar);
+    return Scrollbar::create(this, orientation, RegularScrollbar, &frame().page()->chromeClient());
 }
 
 void FrameView::setContentsSize(const IntSize& size)
 {
     if (size == contentsSize())
         return;
 
     m_contentsSize = size;
     updateScrollbars(scrollOffsetDouble());
     ScrollableArea::contentsResized();
@@ skipping 3501 matching lines @@
     return m_hiddenForThrottling && m_crossOriginForThrottling;
 }
 
 LayoutBox& FrameView::boxForScrollControlPaintInvalidation() const
 {
     ASSERT(layoutView());
     return *layoutView();
 }
 
 } // namespace blink