Refcounting is hard

 Bug: 12994941

Change-Id: I6285ff818fc696dbe504174b98a54cb1d00b445c
diff --git a/libs/hwui/DeferredLayerUpdater.h b/libs/hwui/DeferredLayerUpdater.h
index 0350eef..9800c2f 100644
--- a/libs/hwui/DeferredLayerUpdater.h
+++ b/libs/hwui/DeferredLayerUpdater.h
@@ -34,6 +34,8 @@
 // of a render pass
 class DeferredLayerUpdater {
 public:
+    // Note that DeferredLayerUpdater assumes it is taking ownership of the layer
+    // and will not call incrementRef on it as a result.
     ANDROID_API DeferredLayerUpdater(Layer* layer, OpenGLRenderer* renderer = 0);
     ANDROID_API ~DeferredLayerUpdater();