Attempt to fix breakage caused by r275645 for Windows bots.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@275650 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Action.h

@@ -140,7 +140,8 @@ public:
   std::string getOffloadingKindPrefix() const;
   /// Return a string that can be used as prefix in order to generate unique
   /// files for each offloading kind.
-  std::string getOffloadingFileNamePrefix(StringRef NormalizedTriple) const;
+  std::string
+  getOffloadingFileNamePrefix(llvm::StringRef NormalizedTriple) const;
 
   /// Set the device offload info of this action and propagate it to its
   /// dependences.

lib/Driver/Action.cpp

@@ -104,7 +104,7 @@ std::string Action::getOffloadingKindPrefix() const {
 }
 
 std::string
-Action::getOffloadingFileNamePrefix(StringRef NormalizedTriple) const {
+Action::getOffloadingFileNamePrefix(llvm::StringRef NormalizedTriple) const {
   // A file prefix is only generated for device actions and consists of the
   // offload kind and triple.
   if (!OffloadingDeviceKind)