Extract the (InputKind, std::string) pair used to describe inputs to
the front end into its own class, FrontendInputFile, to make it easier
to introduce new per-input data. No functionality change.

llvm-svn: 148546
diff --git a/clang/tools/libclang/Indexing.cpp b/clang/tools/libclang/Indexing.cpp
index 6bffc6b..c42ef23 100644
--- a/clang/tools/libclang/Indexing.cpp
+++ b/clang/tools/libclang/Indexing.cpp
@@ -18,6 +18,7 @@
 #include "clang/Frontend/ASTUnit.h"
 #include "clang/Frontend/CompilerInvocation.h"
 #include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendAction.h"
 #include "clang/Frontend/Utils.h"
 #include "clang/Sema/SemaConsumer.h"
 #include "clang/AST/ASTConsumer.h"