Use correct ScrollbarTheme to paintScrollCorner

third_party/WebKit/Source/core/paint/FramePainter.h

 // 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.
 
 #ifndef FramePainter_h
 #define FramePainter_h
 
 #include "core/paint/PaintPhase.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class CullRect;
 class FrameView;
 class GraphicsContext;
 class IntRect;
 class Scrollbar;
+class ScrollbarTheme;
 
 class FramePainter {
   STACK_ALLOCATED();
   WTF_MAKE_NONCOPYABLE(FramePainter);
 
  public:
   explicit FramePainter(const FrameView& frameView) : m_frameView(&frameView) {}
 
   void paint(GraphicsContext&, const GlobalPaintFlags, const CullRect&);
   void paintScrollbars(GraphicsContext&, const IntRect&);
   void paintContents(GraphicsContext&, const GlobalPaintFlags, const IntRect&);
-  void paintScrollCorner(GraphicsContext&, const IntRect& cornerRect);
+  void paintScrollCorner(GraphicsContext&,
+                         ScrollbarTheme&,
+                         const IntRect& cornerRect);
 
  private:
   void paintScrollbar(GraphicsContext&, Scrollbar&, const IntRect&);
 
   const FrameView& frameView();
 
   Member<const FrameView> m_frameView;
   static bool s_inPaintContents;
 };
 
 }  // namespace blink
 
 #endif  // FramePainter_h