Store glyph bounds in WordMeasurement to avoid slow path width calc

Source/core/layout/LayoutTextCombine.cpp

Index: Source/core/layout/LayoutTextCombine.cpp
diff --git a/Source/core/layout/LayoutTextCombine.cpp b/Source/core/layout/LayoutTextCombine.cpp
index d1b983df1ad2c7ae48829a3c0f3ac220e4f2f5a4..e519b9a7dbf1143ccdf570eda1a85ae210b2d78c 100644
--- a/Source/core/layout/LayoutTextCombine.cpp
+++ b/Source/core/layout/LayoutTextCombine.cpp
@@ -52,7 +52,7 @@ void LayoutTextCombine::setTextInternal(PassRefPtr<StringImpl> text)
     updateIsCombined();
 }
 
-float LayoutTextCombine::width(unsigned from, unsigned length, const Font& font, LayoutUnit xPosition, TextDirection direction, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow* glyphOverflow) const
+float LayoutTextCombine::width(unsigned from, unsigned length, const Font& font, LayoutUnit xPosition, TextDirection direction, HashSet<const SimpleFontData*>* fallbackFonts, FloatRect* glyphBounds) const
 {
     if (!length)
         return 0;
@@ -63,7 +63,7 @@ float LayoutTextCombine::width(unsigned from, unsigned length, const Font& font,
     if (m_isCombined)
         return font.fontDescription().computedSize();
 
-    return LayoutText::width(from, length, font, xPosition, direction, fallbackFonts, glyphOverflow);
+    return LayoutText::width(from, length, font, xPosition, direction, fallbackFonts, glyphBounds);
 }
 
 void scaleHorizontallyAndTranslate(GraphicsContext& context, float scaleX, float centerX, float offsetX, float offsetY)