Switch all uses of LLVM_OVERRIDE to just use 'override' directly.

llvm-svn: 202625
diff --git a/clang/lib/Frontend/MultiplexConsumer.cpp b/clang/lib/Frontend/MultiplexConsumer.cpp
index 9cf68a5..89aeeb4 100644
--- a/clang/lib/Frontend/MultiplexConsumer.cpp
+++ b/clang/lib/Frontend/MultiplexConsumer.cpp
@@ -107,7 +107,7 @@
   virtual void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
                                             const ObjCPropertyDecl *OrigProp,
                                             const ObjCCategoryDecl *ClassExt);
-  void DeclarationMarkedUsed(const Decl *D) LLVM_OVERRIDE;
+  void DeclarationMarkedUsed(const Decl *D) override;
 
 private:
   std::vector<ASTMutationListener*> Listeners;