Fix tab is invisible when the next stop is close

third_party/WebKit/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 659 matching lines @@
                 segmentRange.script,
                 !fallbackIterator->hasNext()))
                 DLOG(ERROR) << "Shape result extraction failed.";
 
             hb_buffer_reset(harfBuzzBuffer.get());
         }
     }
     return result.release();
 }
 
-PassRefPtr<ShapeResult> ShapeResult::createForTabulationCharacters(const Font* font,
-    const TextRun& textRun, float positionOffset, unsigned count)
-{
-    const SimpleFontData* fontData = font->primaryFont();
-    std::unique_ptr<ShapeResult::RunInfo> run = wrapUnique(new ShapeResult::RunInfo(fontData,
-        // Tab characters are always LTR or RTL, not TTB, even when isVerticalAnyUpright().
-        textRun.rtl() ? HB_DIRECTION_RTL : HB_DIRECTION_LTR,
-        HB_SCRIPT_COMMON, 0, count, count));
-    float position = textRun.xPos() + positionOffset;
-    float startPosition = position;
-    for (unsigned i = 0; i < count; i++) {
-        float advance = font->tabWidth(*fontData, textRun.getTabSize(), position);
-        run->m_glyphData[i].characterIndex = i;
-        run->setGlyphAndPositions(i, fontData->spaceGlyph(), advance, 0, 0);
-        position += advance;
-    }
-    run->m_width = position - startPosition;
-
-    RefPtr<ShapeResult> result = ShapeResult::create(font, count, textRun.direction());
-    result->m_width = run->m_width;
-    result->m_numGlyphs = count;
-    ASSERT(result->m_numGlyphs == count); // no overflow
-    result->m_hasVerticalOffsets = fontData->platformData().isVerticalAnyUpright();
-    result->m_runs.append(std::move(run));
-    return result.release();
-}
-
-
 } // namespace blink