[libclang] Introduce a new function to apply the indexing callbacks on an existing
CXTranslationUnit, mainly to be used for indexing a PCH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144623 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/IndexingContext.h b/tools/libclang/IndexingContext.h
index c3e5f48..fa43a55 100644
--- a/tools/libclang/IndexingContext.h
+++ b/tools/libclang/IndexingContext.h
@@ -227,6 +227,7 @@
   void indexBody(const Stmt *S, const DeclContext *DC);
 
   void handleDiagnostic(const StoredDiagnostic &StoredDiag);
+  void handleDiagnostic(CXDiagnostic CXDiag);
 
   void handleFunction(const FunctionDecl *FD);
 
@@ -265,6 +266,7 @@
 
   bool isNotFromSourceFile(SourceLocation Loc) const;
 
+  void indexTopLevelDecl(Decl *D);
   void indexTUDeclsInObjCContainer();
   void indexDeclGroupRef(DeclGroupRef DG);