Uses and returns the fractional width in text eliding

ui/gfx/font_list.h

Index: ui/gfx/font_list.h
diff --git a/ui/gfx/font_list.h b/ui/gfx/font_list.h
index 2c47f4ca1a479b9d78f66c6c2a4c5ea09e20d948..1acccb6cefc84d475f19e78c2f34d15cf5049d53 100644
--- a/ui/gfx/font_list.h
+++ b/ui/gfx/font_list.h
@@ -85,13 +85,12 @@ class GFX_EXPORT FontList {
   // Currently returns the cap height of the primary font.
   int GetCapHeight() const;
 
-  // Returns the number of horizontal pixels needed to display |text|.
-  int GetStringWidth(const base::string16& text) const;
+  // Returns the pixel width needed to display |text|.
+  float GetStringWidth(const base::string16& text) const;
 
-  // Returns the expected number of horizontal pixels needed to display the
-  // specified length of characters. Call GetStringWidth() to retrieve the
-  // actual number.
-  int GetExpectedTextWidth(int length) const;
+  // Returns the expected pixel width needed to display the specified length of
+  // characters. Call GetStringWidth() to retrieve the actual number.
+  float GetExpectedTextWidth(int length) const;
 
   // Returns the |gfx::Font::FontStyle| style flags for this font list.
   int GetFontStyle() const;