Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h
index 6729838..83d82f0 100644
--- a/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h
+++ b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h
@@ -19,12 +19,8 @@
 namespace pdb {
 
 class PDBSymbolFuncDebugStart : public PDBSymbol {
-public:
-  PDBSymbolFuncDebugStart(const IPDBSession &PDBSession,
-                          std::unique_ptr<IPDBRawSymbol> FuncDebugStartSymbol);
-
   DECLARE_PDB_SYMBOL_CONCRETE_TYPE(PDB_SymType::FuncDebugStart)
-
+public:
   void dump(PDBSymDumper &Dumper) const override;
 
   FORWARD_SYMBOL_METHOD(getAddressOffset)