[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/lib/StaticAnalyzer/Frontend/FrontendActions.cpp b/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp
index a8af6b3..04fbd0c 100644
--- a/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp
+++ b/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp
@@ -23,5 +23,5 @@
 std::unique_ptr<ASTConsumer>
 ParseModelFileAction::CreateASTConsumer(CompilerInstance &CI,
                                         StringRef InFile) {
-  return llvm::make_unique<ModelConsumer>(Bodies);
+  return std::make_unique<ModelConsumer>(Bodies);
 }