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

base/test/test_discardable_memory_allocator.cc

 // Copyright 2015 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 "base/test/test_discardable_memory_allocator.h"
 
 #include <cstdint>
 #include <cstring>
 
 #include "base/logging.h"
@@ skipping 43 matching lines @@
 }  // namespace
 
 TestDiscardableMemoryAllocator::TestDiscardableMemoryAllocator() {
 }
 
 TestDiscardableMemoryAllocator::~TestDiscardableMemoryAllocator() {
 }
 
 std::unique_ptr<DiscardableMemory>
 TestDiscardableMemoryAllocator::AllocateLockedDiscardableMemory(size_t size) {
-  return WrapUnique(new DiscardableMemoryImpl(size));
+  return MakeUnique<DiscardableMemoryImpl>(size);
 }
 
 }  // namespace base