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

cc/layers/layer_client.h

Index: cc/layers/layer_client.h
diff --git a/cc/layers/layer_client.h b/cc/layers/layer_client.h
index 5a20b11f8f46f088c48f2edcd9cfd7de34a32b88..fbb92765cd81f845f6a6354f27129f8ce304ac72 100644
--- a/cc/layers/layer_client.h
+++ b/cc/layers/layer_client.h
@@ -21,7 +21,8 @@ namespace cc {
 class CC_EXPORT LayerClient {
  public:
   // Returns a pointer to a debug info object, if one has been computed.
-  // If not, returns NULL. If the returned pointer is non-NULL, the caller takes
+  // If not, returns nullptr.
+  //If the returned pointer is non-nullptr, the caller takes
   // ownership of the pointer.
   virtual scoped_refptr<base::debug::ConvertableToTraceFormat>
       TakeDebugInfo() = 0;