Uses and returns the fractional width in text eliding

ui/views/controls/button/text_button.cc

Index: ui/views/controls/button/text_button.cc
diff --git a/ui/views/controls/button/text_button.cc b/ui/views/controls/button/text_button.cc
index 38e9691b19aafe85fc0020b9f0ac12a24d114e39..c24be6ce173ead6adb5ee3258b16fc558f281346 100644
--- a/ui/views/controls/button/text_button.cc
+++ b/ui/views/controls/button/text_button.cc
@@ -374,13 +374,13 @@ void TextButtonBase::UpdateTextSize() {
 }
 
 void TextButtonBase::CalculateTextSize(gfx::Size* text_size, int max_width) {
-  int h = font_.GetHeight();
-  int w = multi_line_ ? max_width : 0;
+  float h = font_.GetHeight();
+  float w = multi_line_ ? max_width : 0;
   int flags = ComputeCanvasStringFlags();
   if (!multi_line_)
     flags |= gfx::Canvas::NO_ELLIPSIS;
 
-  gfx::Canvas::SizeStringInt(text_, font_, &w, &h, 0, flags);
+  gfx::Canvas::SizeStringToFit(text_, font_, &w, &h, 0, flags);
   text_size->SetSize(w, h);
 }