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/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 60062d5..4681e01 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -1995,7 +1995,8 @@
 
   if (!CompilationDatabase) {
     std::error_code EC;
-    auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
+    auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC,
+                                                        llvm::sys::fs::OF_Text);
     if (EC) {
       D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
                                                        << EC.message();