Implement "word-break: keep-all" in CSS3 Text

Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * 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 876 matching lines @@
     bool isSpace = false;
     bool firstWord = true;
     bool firstLine = true;
     int nextBreakable = -1;
     int lastWordBoundary = 0;
     float cachedWordTrailingSpaceWidth[2] = { 0, 0 }; // LTR, RTL
 
     int firstGlyphLeftOverflow = -1;
 
     bool breakAll = (styleToUse.wordBreak() == BreakAllWordBreak || styleToUse.wordBreak() == BreakWordBreak) && styleToUse.autoWrap();
+    bool keepAll = styleToUse.wordBreak() == KeepAllWordBreak && styleToUse.autoWrap();
 
     BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
     BidiCharacterRun* run;
     TextDirection textDirection = styleToUse.direction();
     if (is8Bit() || isOverride(styleToUse.unicodeBidi())) {
         run = 0;
     } else {
         TextRun textRun(text());
         BidiStatus status(textDirection, false);
         bidiResolver.setStatus(status);
@@ skipping 62 matching lines @@
             continue;
         }
         if (c == softHyphen) {
             currMaxWidth += widthFromCache(f, lastWordBoundary, i - lastWordBoundary, leadWidth + currMaxWidth, textDirection, &fallbackFonts, &glyphOverflow);
             if (firstGlyphLeftOverflow < 0)
                 firstGlyphLeftOverflow = glyphOverflow.left;
             lastWordBoundary = i + 1;
             continue;
         }
 
-        bool hasBreak = breakIterator.isBreakable(i, nextBreakable, breakAll ? LineBreakType::BreakAll : LineBreakType::Normal);
+        bool hasBreak = breakIterator.isBreakable(i, nextBreakable, breakAll ? LineBreakType::BreakAll : keepAll ? LineBreakType::KeepAll : LineBreakType::Normal);
         bool betweenWords = true;
         int j = i;
         while (c != newlineCharacter && c != space && c != characterTabulation && (c != softHyphen)) {
             j++;
             if (j == len)
                 break;
             c = uncheckedCharacterAt(j);
             if (breakIterator.isBreakable(j, nextBreakable) && characterAt(j - 1) != softHyphen)
                 break;
             if (breakAll) {
@@ skipping 864 matching lines @@
 }
 
 void LayoutText::invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer) const
 {
     LayoutObject::invalidateDisplayItemClients(paintInvalidationContainer);
     for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box);
 }
 
 } // namespace blink