[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr [part-4]

cc/test/layer_tree_test.h

Index: cc/test/layer_tree_test.h
diff --git a/cc/test/layer_tree_test.h b/cc/test/layer_tree_test.h
index 93506800b282199bd6993c5a7ece51c639043415..5104000f9f34f1b44a9eaab02943c5d72b03186b 100644
--- a/cc/test/layer_tree_test.h
+++ b/cc/test/layer_tree_test.h
@@ -174,7 +174,7 @@ class LayerTreeTest : public testing::Test, public TestHooks {
     return main_task_runner_.get();
   }
   Proxy* proxy() const {
-    return layer_tree_host_ ? layer_tree_host_->proxy() : NULL;
+    return layer_tree_host_ ? layer_tree_host_->proxy() : nullptr;
   }
 
   bool TestEnded() const { return ended_; }