Fix test failure for 32 bit official build.

ui/gfx/animation/tween.cc

Index: ui/gfx/animation/tween.cc
diff --git a/ui/gfx/animation/tween.cc b/ui/gfx/animation/tween.cc
index 174305078c27f8425e476d67bb0b5d70afe09351..967e723a603e52c235902afd6047c9a999e90f2d 100644
--- a/ui/gfx/animation/tween.cc
+++ b/ui/gfx/animation/tween.cc
@@ -131,10 +131,11 @@ int Tween::IntValueBetween(double value, int start, int target) {
   else
     delta++;
 #if defined(OS_WIN)
-  return start + static_cast<int>(value * _nextafter(delta, 0));
+  value *= _nextafter(delta, 0);
 #else
-  return start + static_cast<int>(value * nextafter(delta, 0));
+  value *= nextafter(delta, 0);
 #endif
+  return start + static_cast<int>(value);
 }
 
 //static