Fix build broken after llvm/ADT/DenseMap.h replacement of climits with limits.

llvm-svn: 278586

clang/lib/Basic/FileManager.cpp

@@ -26,7 +26,13 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cassert>
+#include <climits>
+#include <cstdint>
+#include <cstdlib>
 #include <string>
+#include <utility>
 
 using namespace clang;
 
@@ -494,7 +500,6 @@ void FileManager::invalidateCache(const FileEntry *Entry) {
   UniqueRealFiles.erase(Entry->getUniqueID());
 }
 
-
 void FileManager::GetUniqueIDMapping(
                    SmallVectorImpl<const FileEntry *> &UIDToFiles) const {
   UIDToFiles.clear();