Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCustom.h b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCustom.h
new file mode 100644
index 0000000..54f0894
--- /dev/null
+++ b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCustom.h
@@ -0,0 +1,40 @@
+//===- PDBSymbolCustom.h - compiler-specific types --------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H
+#define LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H
+
+#include "PDBSymbol.h"
+#include "PDBTypes.h"
+#include "llvm/ADT/SmallVector.h"
+
+namespace llvm {
+
+class raw_ostream;
+
+namespace pdb {
+/// PDBSymbolCustom represents symbols that are compiler-specific and do not
+/// fit anywhere else in the lexical hierarchy.
+/// https://msdn.microsoft.com/en-us/library/d88sf09h.aspx
+class PDBSymbolCustom : public PDBSymbol {
+public:
+ PDBSymbolCustom(const IPDBSession &PDBSession,
+ std::unique_ptr<IPDBRawSymbol> CustomSymbol);
+
+ DECLARE_PDB_SYMBOL_CONCRETE_TYPE(PDB_SymType::Custom)
+
+ void dump(PDBSymDumper &Dumper) const override;
+
+ void getDataBytes(llvm::SmallVector<uint8_t, 32> &bytes);
+};
+
+} // namespace llvm
+}
+
+#endif // LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H