[C++11] Replace OwningPtr include with <memory>.

llvm-svn: 203389

clang/lib/Basic/VirtualFileSystem.cpp

@@ -11,13 +11,13 @@
 
 #include "clang/Basic/VirtualFileSystem.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/YAMLParser.h"
 #include <atomic>
+#include <memory>
 
 using namespace clang;
 using namespace clang::vfs;