[llvm] 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.

llvm-svn: 369013
diff --git a/llvm/tools/llvm-jitlink/llvm-jitlink.cpp b/llvm/tools/llvm-jitlink/llvm-jitlink.cpp
index 79c185a..1e44915 100644
--- a/llvm/tools/llvm-jitlink/llvm-jitlink.cpp
+++ b/llvm/tools/llvm-jitlink/llvm-jitlink.cpp
@@ -233,10 +233,10 @@
   };
 
   if (!NoExec && !TT.isOSWindows())
-    ObjLayer.addPlugin(llvm::make_unique<EHFrameRegistrationPlugin>(
+    ObjLayer.addPlugin(std::make_unique<EHFrameRegistrationPlugin>(
         InProcessEHFrameRegistrar::getInstance()));
 
-  ObjLayer.addPlugin(llvm::make_unique<JITLinkSessionPlugin>(*this));
+  ObjLayer.addPlugin(std::make_unique<JITLinkSessionPlugin>(*this));
 }
 
 void Session::dumpSessionInfo(raw_ostream &OS) {
@@ -589,7 +589,7 @@
   assert(EntryPoint.getAddress() && "Entry point address should not be null");
 
   constexpr const char *JITProgramName = "<llvm-jitlink jit'd code>";
-  auto PNStorage = llvm::make_unique<char[]>(strlen(JITProgramName) + 1);
+  auto PNStorage = std::make_unique<char[]>(strlen(JITProgramName) + 1);
   strcpy(PNStorage.get(), JITProgramName);
 
   std::vector<const char *> EntryPointArgs;