Uses and returns the fractional width in text eliding

ui/gfx/canvas_unittest.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 <limits>
 
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
 
 namespace gfx {
 
 class CanvasTest : public testing::Test {
  protected:
   int GetStringWidth(const char *text) {
     return Canvas::GetStringWidth(UTF8ToUTF16(text), font_);
   }
 
-  gfx::Size SizeStringInt(const char *text, int width, int line_height) {
+  gfx::SizeF SizeStringInt(const char *text, float width, int line_height) {
     base::string16 text16 = UTF8ToUTF16(text);
-    int height = 0;
+    float height = 0;
     int flags =
       (text16.find('\n') != base::string16::npos) ? Canvas::MULTI_LINE : 0;
     Canvas::SizeStringInt(text16, font_, &width, &height, line_height, flags);
-    return gfx::Size(width, height);
+    return gfx::SizeF(width, height);
   }
 
  private:
   gfx::Font font_;
 };
 
 TEST_F(CanvasTest, StringWidth) {
   EXPECT_GT(GetStringWidth("Test"), 0);
 }
 
 TEST_F(CanvasTest, StringWidthEmptyString) {
   EXPECT_EQ(0, GetStringWidth(""));
 }
 
 TEST_F(CanvasTest, StringSizeEmptyString) {
-  gfx::Size size = SizeStringInt("", 0, 0);
+  gfx::SizeF size = SizeStringInt("", 0, 0);
   EXPECT_EQ(0, size.width());
   EXPECT_GT(size.height(), 0);
 }
 
 // Line height is only supported on Skia.
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 #define MAYBE_StringSizeWithLineHeight DISABLED_StringSizeWithLineHeight
 #else
 #define MAYBE_StringSizeWithLineHeight StringSizeWithLineHeight
 #endif
 
 TEST_F(CanvasTest, MAYBE_StringSizeWithLineHeight) {
-  gfx::Size one_line_size = SizeStringInt("Q", 0, 0);
-  gfx::Size four_line_size = SizeStringInt("Q\nQ\nQ\nQ", 1000000, 1000);
+  gfx::SizeF one_line_size = SizeStringInt("Q", 0, 0);
+  gfx::SizeF four_line_size = SizeStringInt("Q\nQ\nQ\nQ", 1000000, 1000);
   EXPECT_EQ(one_line_size.width(), four_line_size.width());
   EXPECT_EQ(3 * 1000 + one_line_size.height(), four_line_size.height());
 }
 
 }  // namespace gfx