[gn build] Port 05cc2d5

Author: llvmgnsyncbot

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -516,6 +516,7 @@ if (current_toolchain == default_toolchain) {
       "__ios/fpos.h",
       "__iterator/access.h",
       "__iterator/advance.h",
+      "__iterator/aliasing_iterator.h",
       "__iterator/back_insert_iterator.h",
       "__iterator/bounded_iter.h",
       "__iterator/common_iterator.h",