Frontend: Lift InputKind enumeration to top level.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105577 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/FrontendOptions.cpp b/lib/Frontend/FrontendOptions.cpp
index bd91638..ef4c3fa 100644
--- a/lib/Frontend/FrontendOptions.cpp
+++ b/lib/Frontend/FrontendOptions.cpp
@@ -11,8 +11,7 @@
 #include "llvm/ADT/StringSwitch.h"
 using namespace clang;
 
-FrontendOptions::InputKind
-FrontendOptions::getInputKindForExtension(llvm::StringRef Extension) {
+InputKind FrontendOptions::getInputKindForExtension(llvm::StringRef Extension) {
   return llvm::StringSwitch<InputKind>(Extension)
     .Case("ast", IK_AST)
     .Case("c", IK_C)