Uses and returns the fractional width in text eliding

ui/views/corewm/tooltip_controller_test_helper.cc

Index: ui/views/corewm/tooltip_controller_test_helper.cc
diff --git a/ui/views/corewm/tooltip_controller_test_helper.cc b/ui/views/corewm/tooltip_controller_test_helper.cc
index 9a2f06f76ca5b9af7a1ba624a2d828b231155880..d740578ae1a5899c496209572f1fdff7f6a5c88b 100644
--- a/ui/views/corewm/tooltip_controller_test_helper.cc
+++ b/ui/views/corewm/tooltip_controller_test_helper.cc
@@ -49,9 +49,9 @@ bool TooltipControllerTestHelper::IsTooltipVisible() {
 }
 
 // static
-void TooltipControllerTestHelper::TrimTooltipToFit(int max_width,
+void TooltipControllerTestHelper::TrimTooltipToFit(float max_width,
                                                    string16* text,
-                                                   int* width,
+                                                   float* width,
                                                    int* line_count) {
   TooltipController::TrimTooltipToFit(max_width, text, width, line_count);
 }