[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

Index: cc/layers/delegated_frame_resource_collection_unittest.cc
diff --git a/cc/layers/delegated_frame_resource_collection_unittest.cc b/cc/layers/delegated_frame_resource_collection_unittest.cc
index 99c181e3f62c2a97e634548f8287278a82a39a5e..8ec716911b29b62187d3f7389de7dc85b6833eaf 100644
--- a/cc/layers/delegated_frame_resource_collection_unittest.cc
+++ b/cc/layers/delegated_frame_resource_collection_unittest.cc
@@ -33,8 +33,8 @@ class DelegatedFrameResourceCollectionTest
 
   void DestroyResourceCollection() {
     if (resource_collection_.get()) {
-      resource_collection_->SetClient(NULL);
-      resource_collection_ = NULL;
+      resource_collection_->SetClient(nullptr);
+      resource_collection_ = nullptr;
     }
   }
 
@@ -151,7 +151,7 @@ TEST_F(DelegatedFrameResourceCollectionTest, Thread) {
   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,