Do not skip ink for ideographic scripts

third_party/WebKit/Source/platform/fonts/GlyphBuffer.h

 /*
  * Copyright (C) 2006, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2008 Torch Mobile Inc.
  *
  * 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.
@@ skipping 74 matching lines @@
     ASSERT(index < size());
     return hasVerticalOffsets() ? m_offsets[index * 2] : m_offsets[index];
   }
 
   float yOffsetAt(unsigned index) const {
     ASSERT(index < size());
     ASSERT(hasVerticalOffsets());
     return m_offsets[index * 2 + 1];
   }
 
-  void add(Glyph glyph, const SimpleFontData* font, float x) {
+  void add(Glyph glyph,
+           const SimpleFontData* font,
+           float x,
+           unsigned characterIndex = 0) {
     // cannot mix x-only/xy offsets
     ASSERT(!hasVerticalOffsets());
 
     m_fontData.append(font);
     m_glyphs.append(glyph);
     m_offsets.append(x);
+    if (m_characterIndexes)
+      m_characterIndexes->append(characterIndex);
   }
 
-  void add(Glyph glyph, const SimpleFontData* font, const FloatPoint& offset) {
+  void add(Glyph glyph,
+           const SimpleFontData* font,
+           const FloatPoint& offset,
+           unsigned characterIndex = 0) {
     // cannot mix x-only/xy offsets
     ASSERT(isEmpty() || hasVerticalOffsets());
 
     m_fontData.append(font);
     m_glyphs.append(glyph);
     m_offsets.append(offset.x());
     m_offsets.append(offset.y());
+    if (m_characterIndexes)
+      m_characterIndexes->append(characterIndex);
   }
 
   void reverseForSimpleRTL(float afterOffset, float totalWidth) {
     ASSERT(!hasVerticalOffsets());
 
     if (isEmpty())
       return;
 
     m_fontData.reverse();
     m_glyphs.reverse();
@@ skipping 12 matching lines @@
     //        yield correctly positioned RTL glyphs without any post-shape
     //        munging).
     SECURITY_DCHECK(!m_offsets.isEmpty());
     for (unsigned i = 0; i + 1 < m_offsets.size(); ++i)
       m_offsets[i] = totalWidth - m_offsets[i + 1];
     m_offsets.back() = totalWidth - afterOffset;
 
     m_offsets.reverse();
   }
 
+  void saveCharacterIndexes() {
+    m_characterIndexes.reset(new Vector<unsigned, 2048>());
+  }
+
+  unsigned characterIndex(unsigned index) const {
+    DCHECK(m_characterIndexes);
+    return (*m_characterIndexes)[index];
+  }
+
  protected:
   Vector<const SimpleFontData*, 2048> m_fontData;
   Vector<Glyph, 2048> m_glyphs;
 
   // Glyph positioning: either x-only offsets, or interleaved x,y offsets
   // (depending on the buffer-wide positioning mode). This matches the
   // glyph positioning format used by Skia.
   Vector<float, 2048> m_offsets;
+
+  std::unique_ptr<Vector<unsigned, 2048>> m_characterIndexes;
 };
 
 }  // namespace blink
 
 #endif