Rendering text-justify:distribute for 8 bit characters.

Source/platform/fonts/Character.h

Index: Source/platform/fonts/Character.h
diff --git a/Source/platform/fonts/Character.h b/Source/platform/fonts/Character.h
index 9b80cbb104cdcc3cb8bc231b0eaab214e3fcbc47..3ad7cfe64b3352a8ae2a1641c422b5b8d623bf18 100644
--- a/Source/platform/fonts/Character.h
+++ b/Source/platform/fonts/Character.h
@@ -34,6 +34,7 @@
 #include "platform/PlatformExport.h"
 #include "platform/text/TextDirection.h"
 #include "platform/text/TextPath.h"
+#include "platform/text/TextRun.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/WTFString.h"
 #include "wtf/unicode/CharacterNames.h"
@@ -48,8 +49,8 @@ public:
     static bool isCJKIdeograph(UChar32);
     static bool isCJKIdeographOrSymbol(UChar32);
 
-    static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion);
-    static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion);
+    static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion, const ETextJustify);
+    static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion, const ETextJustify);
 
     static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; }
     static bool treatAsZeroWidthSpace(UChar c) { return treatAsZeroWidthSpaceInComplexScript(c) || c == 0x200c || c == 0x200d; }