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

llvm-svn: 203389
diff --git a/clang/lib/Frontend/FrontendActions.cpp b/clang/lib/Frontend/FrontendActions.cpp
index 71baa10..b41da6d 100644
--- a/clang/lib/Frontend/FrontendActions.cpp
+++ b/clang/lib/Frontend/FrontendActions.cpp
@@ -21,11 +21,11 @@
 #include "clang/Parse/Parser.h"
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/ASTWriter.h"
-#include "llvm/ADT/OwningPtr.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/system_error.h"
+#include <memory>
 
 using namespace clang;