Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC

F_{None,Text,Append} are kept for compatibility since r334221.

llvm-svn: 367800
diff --git a/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp b/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
index ea3a055..4436363 100644
--- a/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
+++ b/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
@@ -771,7 +771,7 @@
     ExitOnError ExitOnErr(
         "-wholeprogramdevirt-write-summary: " + ClWriteSummary + ": ");
     std::error_code EC;
-    raw_fd_ostream OS(ClWriteSummary, EC, sys::fs::F_Text);
+    raw_fd_ostream OS(ClWriteSummary, EC, sys::fs::OF_Text);
     ExitOnErr(errorCodeToError(EC));
 
     yaml::Output Out(OS);