[preprocessor] Use MacroDirective in the preprocessor callbacks to make available the
full information about the macro (e.g if it was imported and where).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175978 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index 1e7d404..3dc6e2e 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -847,7 +847,8 @@
 public:
   explicit MacroDefinitionTrackerPPCallbacks(unsigned &Hash) : Hash(Hash) { }
   
-  virtual void MacroDefined(const Token &MacroNameTok, const MacroInfo *MI) {
+  virtual void MacroDefined(const Token &MacroNameTok,
+                            const MacroDirective *MD) {
     Hash = llvm::HashString(MacroNameTok.getIdentifierInfo()->getName(), Hash);
   }
 };