Uses and returns the fractional width in text eliding

ui/views/controls/button/text_button.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
@@ skipping 356 matching lines @@
   // again once width() changes.
   if (!multi_line_ || text_width != 0) {
     max_text_size_.SetSize(std::max(max_text_size_.width(), text_size_.width()),
                            std::max(max_text_size_.height(),
                                     text_size_.height()));
     PreferredSizeChanged();
   }
 }
 
 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);
   text_size->SetSize(w, h);
 }
 
 int TextButtonBase::ComputeCanvasStringFlags() const {
   if (!multi_line_)
@@ skipping 346 matching lines @@
   if (show_multiple_icon_states_) {
     if (has_hover_icon_ && (state() == STATE_HOVERED))
       return icon_hover_;
     if (has_pushed_icon_ && (state() == STATE_PRESSED))
       return icon_pushed_;
   }
   return icon_;
 }
 
 }  // namespace views