Constify the rendering/ selection code

Source/core/rendering/RenderBlockFlow.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003-2013 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ skipping 77 matching lines @@
     }
 
     // FIXME-BLOCKFLOW: Move this into RenderBlockFlow once there are no calls
     // in RenderBlock. http://crbug.com/393945, http://crbug.com/302024
     using RenderBlock::lineBoxes;
     using RenderBlock::firstLineBox;
     using RenderBlock::lastLineBox;
     using RenderBlock::firstRootBox;
     using RenderBlock::lastRootBox;
 
-    virtual LayoutUnit logicalLeftSelectionOffset(RenderBlock* rootBlock, LayoutUnit position) OVERRIDE;
-    virtual LayoutUnit logicalRightSelectionOffset(RenderBlock* rootBlock, LayoutUnit position) OVERRIDE;
+    virtual LayoutUnit logicalLeftSelectionOffset(const RenderBlock* rootBlock, LayoutUnit position) const OVERRIDE;
+    virtual LayoutUnit logicalRightSelectionOffset(const RenderBlock* rootBlock, LayoutUnit position) const OVERRIDE;
 
     RootInlineBox* createAndAppendRootInlineBox();
 
     void markAllDescendantsWithFloatsForLayout(RenderBox* floatToRemove = 0, bool inLayout = true);
     void markSiblingsWithFloatsForLayout(RenderBox* floatToRemove = 0);
 
     bool containsFloats() const { return m_floatingObjects && !m_floatingObjects->set().isEmpty(); }
     bool containsFloat(RenderBox*) const;
 
     void removeFloatingObjects();
@@ skipping 61 matching lines @@
     {
         if (m_rareData)
             m_rareData->m_multiColumnFlowThread = nullptr;
     }
 
     void addOverflowFromInlineChildren();
 
     // FIXME: This should be const to avoid a const_cast, but can modify child dirty bits and RenderCombineText
     void computeInlinePreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth);
 
-    GapRects inlineSelectionGaps(RenderBlock* rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
-        LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const PaintInfo*);
+    GapRects inlineSelectionGaps(const RenderBlock* rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
+        LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const PaintInfo*) const;
 
     LayoutUnit paginationStrut() const { return m_rareData ? m_rareData->m_paginationStrut : LayoutUnit(); }
     void setPaginationStrut(LayoutUnit);
 
     virtual bool avoidsFloats() const OVERRIDE;
 
 protected:
     void rebuildFloatsFromIntruding();
     void layoutInlineChildren(bool relayoutChildren, LayoutUnit& paintInvalidationLogicalTop, LayoutUnit& paintInvalidationLogicalBottom, LayoutUnit afterEdge);
 
@@ skipping 64 matching lines @@
     void addOverhangingFloats(RenderBlockFlow* child, bool makeChildPaintOtherFloats);
 
     LayoutUnit lowestFloatLogicalBottom(FloatingObject::Type = FloatingObject::FloatLeftRight) const;
     LayoutUnit nextFloatLogicalBottomBelow(LayoutUnit, ShapeOutsideFloatOffsetMode = ShapeOutsideFloatMarginBoxOffset) const;
 
     virtual bool hitTestFloats(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) OVERRIDE FINAL;
 
     virtual void invalidatePaintForOverhangingFloats(bool paintAllDescendants) OVERRIDE FINAL;
     virtual void invalidatePaintForOverflow() OVERRIDE FINAL;
     virtual void paintFloats(PaintInfo&, const LayoutPoint&, bool preservePhase = false) OVERRIDE FINAL;
-    virtual void clipOutFloatingObjects(RenderBlock*, const PaintInfo*, const LayoutPoint&, const LayoutSize&) OVERRIDE;
+    virtual void clipOutFloatingObjects(const RenderBlock*, const PaintInfo*, const LayoutPoint&, const LayoutSize&) const OVERRIDE;
     void clearFloats(EClear);
 
     LayoutUnit logicalRightFloatOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, LayoutUnit logicalHeight) const;
     LayoutUnit logicalLeftFloatOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, LayoutUnit logicalHeight) const;
 
     LayoutUnit logicalRightOffsetForPositioningFloat(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit* heightRemaining) const;
     LayoutUnit logicalLeftOffsetForPositioningFloat(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit* heightRemaining) const;
 
     LayoutUnit adjustLogicalRightOffsetForLine(LayoutUnit offsetFromFloats, bool applyTextIndent) const;
     LayoutUnit adjustLogicalLeftOffsetForLine(LayoutUnit offsetFromFloats, bool applyTextIndent) const;
@@ skipping 220 matching lines @@
 
 // END METHODS DEFINED IN RenderBlockLineLayout
 
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBlockFlow, isRenderBlockFlow());
 
 } // namespace blink
 
 #endif // RenderBlockFlow_h