Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSession.h b/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSession.h
index 695d62c..88ec517 100644
--- a/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSession.h
+++ b/linux-x64/clang/include/llvm/DebugInfo/PDB/IPDBSession.h
@@ -44,6 +44,11 @@
 
   virtual std::unique_ptr<PDBSymbol>
   findSymbolByAddress(uint64_t Address, PDB_SymType Type) const = 0;
+  virtual std::unique_ptr<PDBSymbol>
+  findSymbolByRVA(uint32_t RVA, PDB_SymType Type) const = 0;
+  virtual std::unique_ptr<PDBSymbol>
+  findSymbolBySectOffset(uint32_t Sect, uint32_t Offset,
+                         PDB_SymType Type) const = 0;
 
   virtual std::unique_ptr<IPDBEnumLineNumbers>
   findLineNumbers(const PDBSymbolCompiland &Compiland,