[gn build] Port 7f2bcd97cf4a
diff --git a/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn b/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
index 0220ced..f21822f 100644
--- a/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
@@ -205,6 +205,7 @@
     "cmpccxaddintrin.h",
     "cpuid.h",
     "crc32intrin.h",
+    "cuda_wrappers/__utility/declval.h",
     "cuda_wrappers/algorithm",
     "cuda_wrappers/bits/basic_string.h",
     "cuda_wrappers/bits/shared_ptr_base.h",