gfx: Fix ToEnclosing/ToEnclosed math to deal with big numbers.

ui/gfx/geometry/rect.cc

Index: ui/gfx/geometry/rect.cc
diff --git a/ui/gfx/geometry/rect.cc b/ui/gfx/geometry/rect.cc
index 25bc9f55a9c0c8eb11baf585423368548baa2b23..5c429232cab4cf9301ac366f7325f5a386e1c531 100644
--- a/ui/gfx/geometry/rect.cc
+++ b/ui/gfx/geometry/rect.cc
@@ -17,6 +17,7 @@
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "ui/gfx/geometry/insets.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 
 namespace gfx {
 
@@ -282,4 +283,8 @@ Rect BoundingRect(const Point& p1, const Point& p2) {
   return Rect(rx, ry, rr - rx, rb - ry);
 }
 
+Rect SafelyScaleToEnclosingRect(const Rect& rect, float scale) {
+  return ToEnclosingRect(ScaleRect(rect, scale));
+}
+
 }  // namespace gfx