Uses and returns the fractional width in text eliding

ui/gfx/font.h

Index: ui/gfx/font.h
diff --git a/ui/gfx/font.h b/ui/gfx/font.h
index 5187ec44a3b90f7a509cb6010332a286d5df7200..2ab64b4f7c1261eb504e5c4f563be1f621d81424 100644
--- a/ui/gfx/font.h
+++ b/ui/gfx/font.h
@@ -69,17 +69,15 @@ class GFX_EXPORT Font {
   // Returns the baseline, or ascent, of the font.
   int GetBaseline() const;
 
-  // Returns the average character width for the font.
-  int GetAverageCharacterWidth() const;
+  // Returns the pixel width for the font.

[msw, 2013/10/01 19:14:53]

nit: revert this comment change or update it to "// Returns the pixel width of
an average character for the font."

[jianli, 2013/10/01 21:34:28]

Done.

+  float GetAverageCharacterWidth() const;
 
-  // Returns the number of horizontal pixels needed to display the specified
-  // string.
-  int GetStringWidth(const base::string16& text) const;
+  // Returns the pixel width needed to display the specified string.
+  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 style of the font.
   int GetStyle() const;