More #include cleaning
 - Drop Diagnostic.h from DeclSpec.h, move utility Diag methods into
   implementation .cpp

llvm-svn: 54626
diff --git a/clang/lib/Parse/Parser.cpp b/clang/lib/Parse/Parser.cpp
index 05abfe1..7bd8b7b 100644
--- a/clang/lib/Parse/Parser.cpp
+++ b/clang/lib/Parse/Parser.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Parse/Parser.h"
+#include "clang/Basic/Diagnostic.h"
 #include "clang/Parse/DeclSpec.h"
 #include "clang/Parse/Scope.h"
 using namespace clang;