Driver: ArgList doesn't depend on Options.h anymore.

llvm-svn: 89313
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index a9a2d0f..af63952 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -16,6 +16,7 @@
 #include "clang/Driver/HostInfo.h"
 #include "clang/Driver/OptTable.h"
 #include "clang/Driver/Option.h"
+#include "clang/Driver/Options.h"
 
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/ErrorHandling.h"