Fix modules self-host: add missing include and forward-decl.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@276152 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Lex/PTHManager.h b/include/clang/Lex/PTHManager.h
index 53939f624e6f81eec7fe627507ed62e359f16446..f4e4774429f940afc092cd05905946b187bb1452 100644 (file)
--- a/include/clang/Lex/PTHManager.h
+++ b/include/clang/Lex/PTHManager.h
@@ -15,6 +15,7 @@
 #define LLVM_CLANG_LEX_PTHMANAGER_H
 
 #include "clang/Basic/IdentifierTable.h"
+#include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/OnDiskHashTable.h"
@@ -26,6 +27,7 @@ namespace llvm {
 namespace clang {
 
 class FileEntry;
+class Preprocessor;
 class PTHLexer;
 class DiagnosticsEngine;
 class FileSystemStatCache;