Uses and returns the fractional width in text eliding

ui/views/corewm/tooltip_controller_unittest.cc

Index: ui/views/corewm/tooltip_controller_unittest.cc
diff --git a/ui/views/corewm/tooltip_controller_unittest.cc b/ui/views/corewm/tooltip_controller_unittest.cc
index efe561d7a5bb235133bcaf6587ca6b1860c0053d..9bcc6b30fcdef11fabbe66bfe8b498830814ceb2 100644
--- a/ui/views/corewm/tooltip_controller_unittest.cc
+++ b/ui/views/corewm/tooltip_controller_unittest.cc
@@ -214,9 +214,10 @@ TEST_F(TooltipControllerTest, EnableOrDisableTooltips) {
 }
 
 TEST_F(TooltipControllerTest, TrimTooltipToFitTests) {
-  const int max_width = 4000;
+  const float max_width = 4000;
   string16 tooltip;
-  int width, line_count, expect_lines;
+  float width;
+  int line_count, expect_lines;
   int max_pixel_width = 400;  // copied from constants in tooltip_controller.cc
   int max_lines = 10;  // copied from constants in tooltip_controller.cc
   gfx::Font font = GetDefaultFont();
@@ -295,7 +296,7 @@ TEST_F(TooltipControllerTest, TrimTooltipToFitTests) {
   tooltip = ASCIIToUTF16("Multi line\nTooltip");
   TooltipControllerTestHelper::TrimTooltipToFit(
       max_width, &tooltip, &width, &line_count);
-  int expected_width = font.GetStringWidth(ASCIIToUTF16("Multi line"));
+  float expected_width = font.GetStringWidth(ASCIIToUTF16("Multi line"));
   expected_width = std::max(expected_width,
                             font.GetStringWidth(ASCIIToUTF16("Tooltip")));
   EXPECT_EQ(expected_width, width);