Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSectionContrib.h b/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSectionContrib.h
new file mode 100644
index 0000000..4fda624
--- /dev/null
+++ b/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSectionContrib.h
@@ -0,0 +1,50 @@
+//==- IPDBSectionContrib.h - Interfaces for PDB SectionContribs --*- 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_IPDBSECTIONCONTRIB_H
+#define LLVM_DEBUGINFO_PDB_IPDBSECTIONCONTRIB_H
+
+#include "PDBTypes.h"
+
+namespace llvm {
+namespace pdb {
+
+/// IPDBSectionContrib defines an interface used to represent section
+/// contributions whose information are stored in the PDB.
+class IPDBSectionContrib {
+public:
+  virtual ~IPDBSectionContrib();
+
+  virtual std::unique_ptr<PDBSymbolCompiland> getCompiland() const = 0;
+  virtual uint32_t getAddressSection() const = 0;
+  virtual uint32_t getAddressOffset() const = 0;
+  virtual uint32_t getRelativeVirtualAddress() const = 0;
+  virtual uint64_t getVirtualAddress() const  = 0;
+  virtual uint32_t getLength() const = 0;
+  virtual bool isNotPaged() const = 0;
+  virtual bool hasCode() const = 0;
+  virtual bool hasCode16Bit() const = 0;
+  virtual bool hasInitializedData() const = 0;
+  virtual bool hasUninitializedData() const = 0;
+  virtual bool isRemoved() const = 0;
+  virtual bool hasComdat() const = 0;
+  virtual bool isDiscardable() const = 0;
+  virtual bool isNotCached() const = 0;
+  virtual bool isShared() const = 0;
+  virtual bool isExecutable() const = 0;
+  virtual bool isReadable() const = 0;
+  virtual bool isWritable() const = 0;
+  virtual uint32_t getDataCrc32() const = 0;
+  virtual uint32_t getRelocationsCrc32() const = 0;
+  virtual uint32_t getCompilandId() const = 0;
+};
+}
+}
+
+#endif // LLVM_DEBUGINFO_PDB_IPDBSECTIONCONTRIB_H