Fix paint invalidation and painting for composited-scrolling input elements.

third_party/WebKit/Source/core/editing/CaretBase.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 
 #include "core/CoreExport.h"
 #include "core/editing/VisiblePosition.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class CullRect;
+class DisplayItemClient;
 class LocalFrame;
 class GraphicsContext;
 class LayoutBlock;
 class LayoutViewItem;
 
 enum class CaretVisibility { Visible, Hidden };
 
 class CORE_EXPORT CaretBase : public  GarbageCollectedFinalized<CaretBase> {
     WTF_MAKE_NONCOPYABLE(CaretBase);
 public:
@@ skipping 17 matching lines @@
     virtual void setCaretVisibility(CaretVisibility);
     bool caretIsVisible() const { return m_caretVisibility == CaretVisibility::Visible; }
     CaretVisibility getCaretVisibility() const { return m_caretVisibility; }
 
     static LayoutBlock* caretLayoutObject(Node*);
     static void invalidateLocalCaretRect(Node*, const LayoutRect&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
+    static DisplayItemClient* displayItemClientForCaret(Node*);
+
     LayoutRect m_caretLocalRect; // caret rect in coords local to the layoutObject responsible for painting the caret
     CaretVisibility m_caretVisibility;
 };
 
 } // namespace blink
 
 #endif // CaretBase_h