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

Source/core/layout/LayoutText.cpp

Index: Source/core/layout/LayoutText.cpp
diff --git a/Source/core/layout/LayoutText.cpp b/Source/core/layout/LayoutText.cpp
index a48a0c8071c36c873d05fc97012633823f5a6825..1fff79d36550064528f7c562a95f8462ae3ce4b7 100644
--- a/Source/core/layout/LayoutText.cpp
+++ b/Source/core/layout/LayoutText.cpp
@@ -894,6 +894,7 @@ void LayoutText::computePreferredLogicalWidths(float leadWidth, HashSet<const Si
     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;
@@ -976,7 +977,7 @@ void LayoutText::computePreferredLogicalWidths(float leadWidth, HashSet<const Si
             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)) {