Remove -webkit-line-box-contain implementation.

Source/core/layout/LayoutBlockFlowLine.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 90 matching lines @@
     return false;
 }
 
 InlineFlowBox* LayoutBlockFlow::createLineBoxes(LayoutObject* obj, const LineInfo& lineInfo, InlineBox* childBox)
 {
     // See if we have an unconstructed line box for this object that is also
     // the last item on the line.
     unsigned lineDepth = 1;
     InlineFlowBox* parentBox = nullptr;
     InlineFlowBox* result = nullptr;
-    bool hasDefaultLineBoxContain = style()->lineBoxContain() == ComputedStyle::initialLineBoxContain();
     do {
         ASSERT_WITH_SECURITY_IMPLICATION(obj->isLayoutInline() || obj == this);
 
         LayoutInline* inlineFlow = (obj != this) ? toLayoutInline(obj) : 0;
 
         // Get the last box we made for this layout object.
         parentBox = inlineFlow ? inlineFlow->lastLineBox() : toLayoutBlock(obj)->lastLineBox();
 
         // If this box or its ancestor is constructed then it is from a previous line, and we need
         // to make a new box for our line.  If this box or its ancestor is unconstructed but it has
         // something following it on the line, then we know we have to make a new box
         // as well.  In this situation our inline has actually been split in two on
         // the same line (this can happen with very fancy language mixtures).
         bool constructedNewBox = false;
-        bool allowedToConstructNewBox = !hasDefaultLineBoxContain || !inlineFlow || inlineFlow->alwaysCreateLineBoxes();
+        bool allowedToConstructNewBox = !inlineFlow || inlineFlow->alwaysCreateLineBoxes();
         bool canUseExistingParentBox = parentBox && !parentIsConstructedOrHaveNext(parentBox);
         if (allowedToConstructNewBox && !canUseExistingParentBox) {
             // We need to make a new box for this layout object.  Once
             // made, we need to place it at the end of the current line.
             InlineBox* newBox = createInlineBoxForLayoutObject(obj, obj == this);
             ASSERT_WITH_SECURITY_IMPLICATION(newBox->isInlineFlowBox());
             parentBox = toInlineFlowBox(newBox);
             parentBox->setFirstLineStyleBit(lineInfo.isFirstLine());
             parentBox->setIsHorizontal(isHorizontalWritingMode());
-            if (!hasDefaultLineBoxContain)
-                parentBox->clearDescendantsHaveSameLineHeightAndBaseline();
             constructedNewBox = true;
         }
 
         if (constructedNewBox || canUseExistingParentBox) {
             if (!result)
                 result = parentBox;
 
             // If we have hit the block itself, then |box| represents the root
             // inline box for the line, and it doesn't have to be appended to any parent
             // inline.
@@ skipping 219 matching lines @@
     setMarginEndForChild(*layoutRubyRun, -endOverhang);
 }
 
 static inline void setLogicalWidthForTextRun(RootInlineBox* lineBox, BidiRun* run, LayoutText* layoutText, LayoutUnit xPos, const LineInfo& lineInfo,
     GlyphOverflowAndFallbackFontsMap& textBoxDataMap, VerticalPositionCache& verticalPositionCache, WordMeasurements& wordMeasurements)
 {
     HashSet<const SimpleFontData*> fallbackFonts;
     GlyphOverflow glyphOverflow;
 
     const Font& font = layoutText->style(lineInfo.isFirstLine())->font();
-    // Always compute glyph overflow bounds if the block's line-box-contain value is "glyphs".
-    if (lineBox->fitsToGlyphs())
-        glyphOverflow.computeBounds = true;
 
     LayoutUnit hyphenWidth = 0;
     if (toInlineTextBox(run->m_box)->hasHyphen())
         hyphenWidth = layoutText->hyphenWidth(font, run->direction());
 
     float measuredWidth = 0;
     FloatRect glyphBounds;
 
     bool kerningIsEnabled = font.fontDescription().typesettingFeatures() & Kerning;
 
@@ skipping 1649 matching lines @@
     LayoutUnit logicalLeft = logicalLeftOffsetForLine(logicalHeight(), false);
     LayoutUnit availableLogicalWidth = logicalRightOffsetForLine(logicalHeight(), false) - logicalLeft;
     updateLogicalWidthForAlignment(textAlign, 0, 0, logicalLeft, totalLogicalWidth, availableLogicalWidth, 0);
 
     if (!style()->isLeftToRightDirection())
         return logicalWidth() - logicalLeft;
     return logicalLeft;
 }
 
 }