Re-write many calls to WrapUnique() with MakeUnique()

components/undo/undo_manager_test.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/undo/undo_manager.h"
 
 #include "base/auto_reset.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "components/undo/undo_manager_observer.h"
@@ skipping 70 matching lines @@
 
 TestUndoService::~TestUndoService() {
 }
 
 void TestUndoService::Redo() {
   base::AutoReset<bool> incoming_changes(&performing_redo_, true);
   undo_manager_.Redo();
 }
 
 void TestUndoService::TriggerOperation() {
-  undo_manager_.AddUndoOperation(base::WrapUnique(new TestUndoOperation(this)));
+  undo_manager_.AddUndoOperation(base::MakeUnique<TestUndoOperation>(this));
 }
 
 void TestUndoService::RecordUndoCall() {
   if (performing_redo_)
     ++redo_operation_count_;
   else
     ++undo_operation_count_;
 }
 
 // TestObserver ----------------------------------------------------------------
@@ skipping 157 matching lines @@
   undo_service.undo_manager_.Redo();
   int callback_count_after_redo = observer.state_change_count();
   EXPECT_GT(callback_count_after_redo, callback_count_after_undo);
 
   undo_service.undo_manager_.RemoveObserver(&observer);
   undo_service.undo_manager_.Undo();
   EXPECT_EQ(callback_count_after_redo, observer.state_change_count());
 }
 
 } // namespace