Revert "Force tabs to be integer widths."

chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

Index: chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
diff --git a/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm b/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
index cadd1154775151b6cc0a39acc016904321fe947e..f39fffe9ece1525c06912e55f1dfdb738a2c9e9f 100644
--- a/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
+++ b/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
@@ -6,7 +6,6 @@
 
 #import <QuartzCore/QuartzCore.h>
 
-#include <cmath>
 #include <limits>
 #include <string>
 
@@ -859,8 +858,7 @@ private:
     availableSpaceForNonMini += (numberOfOpenNonMiniTabs - 1) * kTabOverlap;
 
     // Divide up the space between the non-mini-tabs.
-    nonMiniTabWidth =
-        std::floor(availableSpaceForNonMini / numberOfOpenNonMiniTabs);
+    nonMiniTabWidth = availableSpaceForNonMini / numberOfOpenNonMiniTabs;
 
     // Clamp the width between the max and min.
     nonMiniTabWidth = MAX(MIN(nonMiniTabWidth, kMaxTabWidth), kMinTabWidth);