Re-enable PRESUBMIT check for empty unique_ptr<> rvalue

ui/display/chromeos/display_configurator_unittest.cc

Index: ui/display/chromeos/display_configurator_unittest.cc
diff --git a/ui/display/chromeos/display_configurator_unittest.cc b/ui/display/chromeos/display_configurator_unittest.cc
index f2e40caa07e0ed18851292cdd088c7152e8981ab..1fbc0f69a510c62518315852cbe46721113a92c7 100644
--- a/ui/display/chromeos/display_configurator_unittest.cc
+++ b/ui/display/chromeos/display_configurator_unittest.cc
@@ -227,15 +227,14 @@ class DisplayConfiguratorTest : public testing::Test {
   }
 
   void Init(bool panel_fitting_enabled) {
-    configurator_.Init(std::unique_ptr<NativeDisplayDelegate>(),
-                       panel_fitting_enabled);
+    configurator_.Init(nullptr, panel_fitting_enabled);
   }
 
   // Initializes |configurator_| with a single internal display.
   void InitWithSingleOutput() {
     UpdateOutputs(1, false);
     EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
-    configurator_.Init(std::unique_ptr<NativeDisplayDelegate>(), false);
+    configurator_.Init(nullptr, false);
 
     EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
     configurator_.ForceInitialConfigure(0);