Revert "unique_ptr-ify ownership of ASTConsumers"

This reverts commit r213307.

Reverting to have some on-list discussion/confirmation about the ongoing
direction of smart pointer usage in the LLVM project.

llvm-svn: 213325
diff --git a/clang/unittests/Frontend/FrontendActionTest.cpp b/clang/unittests/Frontend/FrontendActionTest.cpp
index 48bc072..e39d00f 100644
--- a/clang/unittests/Frontend/FrontendActionTest.cpp
+++ b/clang/unittests/Frontend/FrontendActionTest.cpp
@@ -38,9 +38,9 @@
     return ASTFrontendAction::BeginSourceFileAction(ci, filename);
   }
 
-  virtual std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
-                                                         StringRef InFile) {
-    return llvm::make_unique<Visitor>(decl_names);
+  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                         StringRef InFile) {
+    return new Visitor(decl_names);
   }
 
 private: