Segment strings on dot and comma in addition to space and tab

third_party/WebKit/Source/platform/fonts/shaping/CachingWordShapeIterator.h

 /*
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 87 matching lines @@
         return result->applySpacingToCopy(m_spacing, wordRun);
     }
 
     bool nextWord(RefPtr<ShapeResult>* wordResult)
     {
         return shapeToEndIndex(wordResult, nextWordEndIndex());
     }
 
     static bool isWordDelimiter(UChar ch)
     {
-        return ch == spaceCharacter || ch == tabulationCharacter;
+        return ch == spaceCharacter || ch == tabulationCharacter
+            || ch == '.' || ch == ',';
     }
 
     unsigned nextWordEndIndex()
     {
         const unsigned length = m_textRun.length();
         if (m_startIndex >= length)
             return 0;
 
         if (m_startIndex + 1u == length || isWordDelimiter(m_textRun[m_startIndex]))
             return m_startIndex + 1;
@@ skipping 100 matching lines @@
     const Font* m_font;
     ShapeResultSpacing m_spacing;
     float m_widthSoFar; // Used only when allowTabs()
     unsigned m_startIndex : 31;
     unsigned m_shapeByWord : 1;
 };
 
 } // namespace blink
 
 #endif // CachingWordShapeIterator_h