Avoid drawing emphasis marks over ellipsis glyphs

Source/platform/fonts/shaping/HarfBuzzShaper.cpp

 /*
  * Copyright (c) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 BlackBerry Limited. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 999 matching lines @@
     if (m_run.rtl())
         clusterStart = currentRun->startIndex() + currentRun->numCharacters();
     else
         clusterStart = currentRun->startIndex() + glyphToCharacterIndexes[0];
 
     float advanceSoFar = initialAdvance;
     for (unsigned i = 0; i < numGlyphs; ++i) {
         uint16_t currentCharacterIndex = currentRun->startIndex() + glyphToCharacterIndexes[i];
         bool isRunEnd = (i + 1 == numGlyphs);
         bool isClusterEnd =  isRunEnd || (currentRun->startIndex() + glyphToCharacterIndexes[i + 1] != currentCharacterIndex);
+
+        if ((m_run.rtl() && currentCharacterIndex >= m_toIndex) || (!m_run.rtl() && currentCharacterIndex < m_fromIndex)) {
+            advanceSoFar += advances[i];
+            m_run.rtl() ? --clusterStart : ++clusterStart;
+            continue;
+        }
+
         clusterAdvance += advances[i];
 
         if (isClusterEnd) {
             uint16_t clusterEnd;
             if (m_run.rtl())
                 clusterEnd = currentCharacterIndex;
             else
                 clusterEnd = isRunEnd ? currentRun->startIndex() + currentRun->numCharacters() : currentRun->startIndex() + glyphToCharacterIndexes[i + 1];
 
             graphemesInCluster = countGraphemesInCluster(m_normalizedBuffer.get(), m_normalizedBufferLength, clusterStart, clusterEnd);
@@ skipping 108 matching lines @@
         fromX = 0;
     if (!foundToX)
         toX = m_run.rtl() ? 0 : m_totalWidth;
 
     if (fromX < toX)
         return FloatRect(point.x() + fromX, point.y(), toX - fromX, height);
     return FloatRect(point.x() + toX, point.y(), fromX - toX, height);
 }
 
 } // namespace blink