[libclang] Create a diagnostic set to pass at the end of indexing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145557 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndexDiagnostic.h b/tools/libclang/CIndexDiagnostic.h
index cc00cfe..72f57f8 100644
--- a/tools/libclang/CIndexDiagnostic.h
+++ b/tools/libclang/CIndexDiagnostic.h
@@ -149,6 +149,11 @@
   }
 };
 
+namespace cxdiag {
+CXDiagnosticSetImpl *lazyCreateDiags(CXTranslationUnit TU,
+                                     bool checkIfChanged = false);
+} // end namespace cxdiag
+
 } // end namespace clang
 
 #endif // LLVM_CLANG_CINDEX_DIAGNOSTIC_H