[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr in src/…

cc/layers/delegated_frame_resource_collection_unittest.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 "base/bind.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/resources/returned_resource.h"
@@ skipping 15 matching lines @@
   virtual void TearDown() override { DestroyResourceCollection(); }
 
   void CreateResourceCollection() {
     DCHECK(!resource_collection_.get());
     resource_collection_ = new DelegatedFrameResourceCollection;
     resource_collection_->SetClient(this);
   }
 
   void DestroyResourceCollection() {
     if (resource_collection_.get()) {
-      resource_collection_->SetClient(NULL);
-      resource_collection_ = NULL;
+      resource_collection_->SetClient(nullptr);
+      resource_collection_ = nullptr;
     }
   }
 
   TransferableResourceArray CreateResourceArray() {
     TransferableResourceArray resources;
     TransferableResource resource;
     resource.id = 444;
     resources.push_back(resource);
     return resources;
   }
@@ skipping 96 matching lines @@
   resource_collection_->LoseAllResources();
   DestroyResourceCollection();
 
   EXPECT_TRUE(ReturnAndResetResourcesAvailable());
   EXPECT_EQ(1u, returned_resources_.size());
   EXPECT_EQ(444u, returned_resources_[0].id);
   EXPECT_EQ(1, returned_resources_[0].count);
   EXPECT_TRUE(returned_resources_[0].lost);
   returned_resources_.clear();
 
-  base::WaitableEvent* null_event = NULL;
+  base::WaitableEvent* null_event = nullptr;
   thread.message_loop()->PostTask(FROM_HERE,
                                   base::Bind(&ReturnResourcesOnThread,
                                              return_callback,
                                              returned_resources,
                                              null_event,
                                              main_thread_task_runner.get()));
 
   thread.Stop();
 }
 
 }  // namespace
 }  // namespace cc