Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h
index 7868f04..ffc4083 100644
--- a/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h
+++ b/linux-x64/clang/include/llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h
@@ -18,12 +18,8 @@
 class raw_ostream;
 namespace pdb {
 class PDBSymbolCompilandEnv : public PDBSymbol {
-public:
-  PDBSymbolCompilandEnv(const IPDBSession &PDBSession,
-                        std::unique_ptr<IPDBRawSymbol> Symbol);
-
   DECLARE_PDB_SYMBOL_CONCRETE_TYPE(PDB_SymType::CompilandEnv)
-
+public:
   void dump(PDBSymDumper &Dumper) const override;
 
   FORWARD_SYMBOL_ID_METHOD(getLexicalParent)