1 files changed, 37 insertions, 0 deletions
diff --git a/security/sandbox/chromium/sandbox/linux/bpf_dsl/bpf_dsl_forward.h b/security/sandbox/chromium/sandbox/linux/bpf_dsl/bpf_dsl_forward.h
new file mode 100644
index 0000000000..af1b48b407
--- /dev/null
+++ b/security/sandbox/chromium/sandbox/linux/bpf_dsl/bpf_dsl_forward.h
@@ -0,0 +1,37 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_
+#define SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_
+
+#include <memory>
+
+#include "sandbox/sandbox_export.h"
+
+namespace sandbox {
+namespace bpf_dsl {
+
+// The bpf_dsl_forward.h header provides forward declarations for the
+// types defined in bpf_dsl.h. It's intended for use in user headers
+// that need to reference bpf_dsl types, but don't require definitions.
+
+namespace internal {
+class ResultExprImpl;
+class BoolExprImpl;
+}
+
+using ResultExpr = std::shared_ptr<const internal::ResultExprImpl>;
+using BoolExpr = std::shared_ptr<const internal::BoolExprImpl>;
+
+}  // namespace bpf_dsl
+}  // namespace sandbox
+
+namespace std {
+extern template class SANDBOX_EXPORT
+    shared_ptr<const sandbox::bpf_dsl::internal::BoolExprImpl>;
+extern template class SANDBOX_EXPORT
+    shared_ptr<const sandbox::bpf_dsl::internal::ResultExprImpl>;
+}  // namespace std
+
+#endif  // SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_