Uses and returns the fractional width in text eliding

ui/gfx/font_list.cc

Index: ui/gfx/font_list.cc
diff --git a/ui/gfx/font_list.cc b/ui/gfx/font_list.cc
index 72c877754e59bfeeba9bf63af3ad8f652385d7af..929816092224f108ea25b12df8c47e6017ef854e 100644
--- a/ui/gfx/font_list.cc
+++ b/ui/gfx/font_list.cc
@@ -182,7 +182,7 @@ int FontList::GetCapHeight() const {
   return GetPrimaryFont().GetCapHeight();
 }
 
-int FontList::GetStringWidth(const base::string16& text) const {
+float FontList::GetStringWidth(const base::string16& text) const {
   // Rely on the primary font metrics for the time being.
   // TODO(yukishiino): Not only the first font, all the fonts in the list should
   // be taken into account to compute the pixels needed to display |text|.
@@ -195,7 +195,7 @@ int FontList::GetStringWidth(const base::string16& text) const {
   return GetPrimaryFont().GetStringWidth(text);
 }
 
-int FontList::GetExpectedTextWidth(int length) const {
+float FontList::GetExpectedTextWidth(int length) const {
   // Rely on the primary font metrics for the time being.
   return GetPrimaryFont().GetExpectedTextWidth(length);
 }