Uses and returns the fractional width in text eliding

ui/gfx/font.cc

Index: ui/gfx/font.cc
diff --git a/ui/gfx/font.cc b/ui/gfx/font.cc
index 7f6ac7ce809dd8dfa1b5acf93ae8970601bdb4e4..e916384b10ef90f2962634fb2071e946c57f23b6 100644
--- a/ui/gfx/font.cc
+++ b/ui/gfx/font.cc
@@ -58,15 +58,15 @@ int Font::GetCapHeight() const {
   return platform_font_->GetCapHeight();
 }
 
-int Font::GetAverageCharacterWidth() const {
+float Font::GetAverageCharacterWidth() const {
   return platform_font_->GetAverageCharacterWidth();
 }
 
-int Font::GetStringWidth(const base::string16& text) const {
+float Font::GetStringWidth(const base::string16& text) const {
   return platform_font_->GetStringWidth(text);
 }
 
-int Font::GetExpectedTextWidth(int length) const {
+float Font::GetExpectedTextWidth(int length) const {
   return platform_font_->GetExpectedTextWidth(length);
 }