[Clang] Migrate llvm::make_unique to std::make_unique

Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.

Differential revision: https://reviews.llvm.org/D66259

llvm-svn: 368942
diff --git a/clang/tools/libclang/Indexing.cpp b/clang/tools/libclang/Indexing.cpp
index 1d30bbf..ad3be53 100644
--- a/clang/tools/libclang/Indexing.cpp
+++ b/clang/tools/libclang/Indexing.cpp
@@ -368,16 +368,16 @@
 
     DataConsumer->setASTContext(CI.getASTContext());
     Preprocessor &PP = CI.getPreprocessor();
-    PP.addPPCallbacks(llvm::make_unique<IndexPPCallbacks>(PP, *DataConsumer));
+    PP.addPPCallbacks(std::make_unique<IndexPPCallbacks>(PP, *DataConsumer));
     DataConsumer->setPreprocessor(CI.getPreprocessorPtr());
 
     if (SKData) {
       auto *PPRec = new PPConditionalDirectiveRecord(PP.getSourceManager());
       PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(PPRec));
-      SKCtrl = llvm::make_unique<TUSkipBodyControl>(*SKData, *PPRec, PP);
+      SKCtrl = std::make_unique<TUSkipBodyControl>(*SKData, *PPRec, PP);
     }
 
-    return llvm::make_unique<IndexingConsumer>(*DataConsumer, SKCtrl.get());
+    return std::make_unique<IndexingConsumer>(*DataConsumer, SKCtrl.get());
   }
 
   TranslationUnitKind getTranslationUnitKind() override {
@@ -547,7 +547,7 @@
   auto DataConsumer =
     std::make_shared<CXIndexDataConsumer>(client_data, CB, index_options,
                                           CXTU->getTU());
-  auto InterAction = llvm::make_unique<IndexingFrontendAction>(DataConsumer,
+  auto InterAction = std::make_unique<IndexingFrontendAction>(DataConsumer,
                          SkipBodies ? IdxSession->SkipBodyData.get() : nullptr);
   std::unique_ptr<FrontendAction> IndexAction;
   IndexAction = createIndexingAction(DataConsumer,