Add support for the column-fill property.

Source/core/rendering/style/RenderStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 783 matching lines @@
         ColumnAxis axis = columnAxis();
         return axis == AutoColumnAxis || isHorizontalWritingMode() == (axis == HorizontalColumnAxis);
     }
     ColumnProgression columnProgression() const { return static_cast<ColumnProgression>(rareNonInheritedData->m_multiCol->m_progression); }
     float columnWidth() const { return rareNonInheritedData->m_multiCol->m_width; }
     bool hasAutoColumnWidth() const { return rareNonInheritedData->m_multiCol->m_autoWidth; }
     unsigned short columnCount() const { return rareNonInheritedData->m_multiCol->m_count; }
     bool hasAutoColumnCount() const { return rareNonInheritedData->m_multiCol->m_autoCount; }
     bool specifiesAutoColumns() const { return hasAutoColumnCount() && hasAutoColumnWidth(); }
     bool specifiesColumns() const { return !hasAutoColumnCount() || !hasAutoColumnWidth() || !hasInlineColumnAxis(); }
+    ColumnFill columnFill() const { return static_cast<ColumnFill>(rareNonInheritedData->m_multiCol->m_fill); }
     float columnGap() const { return rareNonInheritedData->m_multiCol->m_gap; }
     bool hasNormalColumnGap() const { return rareNonInheritedData->m_multiCol->m_normalGap; }
     EBorderStyle columnRuleStyle() const { return rareNonInheritedData->m_multiCol->m_rule.style(); }
     unsigned short columnRuleWidth() const { return rareNonInheritedData->m_multiCol->ruleWidth(); }
     bool columnRuleIsTransparent() const { return rareNonInheritedData->m_multiCol->m_rule.isTransparent(); }
     ColumnSpan columnSpan() const { return static_cast<ColumnSpan>(rareNonInheritedData->m_multiCol->m_columnSpan); }
     EPageBreak columnBreakBefore() const { return static_cast<EPageBreak>(rareNonInheritedData->m_multiCol->m_breakBefore); }
     EPageBreak columnBreakInside() const { return static_cast<EPageBreak>(rareNonInheritedData->m_multiCol->m_breakInside); }
     EPageBreak columnBreakAfter() const { return static_cast<EPageBreak>(rareNonInheritedData->m_multiCol->m_breakAfter); }
     EPageBreak regionBreakBefore() const { return static_cast<EPageBreak>(rareNonInheritedData->m_regionBreakBefore); }
@@ skipping 419 matching lines @@
     void setHyphenationString(const AtomicString& h) { SET_VAR(rareInheritedData, hyphenationString, h); }
     void setLocale(const AtomicString& locale) { SET_VAR(rareInheritedData, locale, locale); }
     void setBorderFit(EBorderFit b) { SET_VAR(rareNonInheritedData, m_borderFit, b); }
     void setResize(EResize r) { SET_VAR(rareInheritedData, resize, r); }
     void setColumnAxis(ColumnAxis axis) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_axis, axis); }
     void setColumnProgression(ColumnProgression progression) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_progression, progression); }
     void setColumnWidth(float f) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_autoWidth, false); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_width, f); }
     void setHasAutoColumnWidth() { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_autoWidth, true); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_width, 0); }
     void setColumnCount(unsigned short c) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_autoCount, false); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_count, c); }
     void setHasAutoColumnCount() { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_autoCount, true); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_count, 0); }
+    void setColumnFill(ColumnFill columnFill) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_fill, columnFill); }
     void setColumnGap(float f) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_normalGap, false); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_gap, f); }
     void setHasNormalColumnGap() { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_normalGap, true); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_gap, 0); }
     void setColumnRuleColor(const Color& c) { SET_BORDERVALUE_COLOR(rareNonInheritedData.access()->m_multiCol, m_rule, c); }
     void setColumnRuleStyle(EBorderStyle b) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_rule.m_style, b); }
     void setColumnRuleWidth(unsigned short w) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_rule.m_width, w); }
     void resetColumnRule() { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_rule, BorderValue()); }
     void setColumnSpan(ColumnSpan columnSpan) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_columnSpan, columnSpan); }
     void setColumnBreakBefore(EPageBreak p) { SET_VAR(rareNonInheritedData.access()->m_multiCol, m_breakBefore, p); }
     // For valid values of column-break-inside see http://www.w3.org/TR/css3-multicol/#break-before-break-after-break-inside
     void setColumnBreakInside(EPageBreak p) { ASSERT(p == PBAUTO || p == PBAVOID); SET_VAR(rareNonInheritedData.access()->m_multiCol, m_breakInside, p); }
@@ skipping 323 matching lines @@
     static const AtomicString& initialLocale() { return nullAtom; }
     static EBorderFit initialBorderFit() { return BorderFitBorder; }
     static EResize initialResize() { return RESIZE_NONE; }
     static ControlPart initialAppearance() { return NoControlPart; }
     static bool initialHasAspectRatio() { return false; }
     static float initialAspectRatioDenominator() { return 1; }
     static float initialAspectRatioNumerator() { return 1; }
     static Order initialRTLOrdering() { return LogicalOrder; }
     static float initialTextStrokeWidth() { return 0; }
     static unsigned short initialColumnCount() { return 1; }
+    static ColumnFill initialColumnFill() { return ColumnFillBalance; }
     static ColumnSpan initialColumnSpan() { return ColumnSpanNone; }
     static const TransformOperations& initialTransform() { DEFINE_STATIC_LOCAL(TransformOperations, ops, ()); return ops; }
     static Length initialTransformOriginX() { return Length(50.0, Percent); }
     static Length initialTransformOriginY() { return Length(50.0, Percent); }
     static EPointerEvents initialPointerEvents() { return PE_AUTO; }
     static float initialTransformOriginZ() { return 0; }
     static ETransformStyle3D initialTransformStyle3D() { return TransformStyle3DFlat; }
     static EBackfaceVisibility initialBackfaceVisibility() { return BackfaceVisibilityVisible; }
     static float initialPerspective() { return 0; }
     static Length initialPerspectiveOriginX() { return Length(50.0, Percent); }
@@ skipping 186 matching lines @@
     if (compareEqual(rareInheritedData->m_textOrientation, textOrientation))
         return false;
 
     rareInheritedData.access()->m_textOrientation = textOrientation;
     return true;
 }
 
 } // namespace WebCore
 
 #endif // RenderStyle_h