Remove updatePaintingInfoForFragments() and per-fragment shouldPaintContent flag.

Source/core/rendering/LayerFragment.h

 /*
  * Copyright (C) 2003, 2009, 2012 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 15 matching lines @@
 #ifndef LayerFragment_h
 #define LayerFragment_h
 
 #include "core/rendering/ClipRect.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 struct LayerFragment {
 public:
-    LayerFragment()
-        : shouldPaintContent(false)
-    {
-    }
-
     void setRects(const LayoutRect& bounds, const ClipRect& background, const ClipRect& foreground, const ClipRect& outline)
     {
         layerBounds = bounds;
         backgroundRect = background;
         foregroundRect = foreground;
         outlineRect = outline;
     }
 
     void moveBy(const LayoutPoint& offset)
     {
         layerBounds.moveBy(offset);
         backgroundRect.moveBy(offset);
         foregroundRect.moveBy(offset);
         outlineRect.moveBy(offset);
         paginationClip.moveBy(offset);
     }
 
     void intersect(const LayoutRect& rect)
     {
         backgroundRect.intersect(rect);
         foregroundRect.intersect(rect);
         outlineRect.intersect(rect);
     }
 
-    bool shouldPaintContent;
     LayoutRect layerBounds;
     ClipRect backgroundRect;
     ClipRect foregroundRect;
     ClipRect outlineRect;
 
     // Unique to paginated fragments. The physical translation to apply to shift the layer when painting/hit-testing.
     LayoutPoint paginationOffset;
 
     // Also unique to paginated fragments. An additional clip that applies to the layer. It is in layer-local
     // (physical) coordinates.
     LayoutRect paginationClip;
 };
 
 typedef Vector<LayerFragment, 1> LayerFragments;
 
 } // namespace blink
 
 #endif // LayerFragment_h