Index: ios/chrome/browser/ui/ui_util_unittest.mm |
diff --git a/ios/chrome/browser/ui/ui_util_unittest.mm b/ios/chrome/browser/ui/ui_util_unittest.mm |
index a7b8e8e5b7f813e0f08da05198e6b9843c32c97c..1a2c2d390b4612ac1822e19d106896ef23107eda 100644 |
--- a/ios/chrome/browser/ui/ui_util_unittest.mm |
+++ b/ios/chrome/browser/ui/ui_util_unittest.mm |
@@ -11,6 +11,10 @@ |
#include "testing/gtest/include/gtest/gtest.h" |
#include "testing/gtest_mac.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
TEST(UIUtilTest, AlignToPixel) { |
CGFloat scale = [[UIScreen mainScreen] scale]; |
// Pick a few interesting values: already aligned, aligned on retina, and |