Index: ios/web/web_state/page_viewport_state.mm |
diff --git a/ios/web/web_state/page_viewport_state.mm b/ios/web/web_state/page_viewport_state.mm |
index f1e78134bf9540929a8f96ff18f0173ae2c04ffd..7b71ba2cef43e501c15709e5f4f1660facac4473 100644 |
--- a/ios/web/web_state/page_viewport_state.mm |
+++ b/ios/web/web_state/page_viewport_state.mm |
@@ -6,6 +6,10 @@ |
#include "base/logging.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace { |
// Parses a double from |viewport_content|. |viewport_content| is expected to |
// have no leading whitespace. |
@@ -82,4 +86,4 @@ void PageViewportState::UpdateWithViewportContent( |
} |
} |
-} // namespace web |
+} // namespace web |