cc: refcount resources as we send them to the parent

cc/output/delegating_renderer_unittest.cc

Index: cc/output/delegating_renderer_unittest.cc
diff --git a/cc/output/delegating_renderer_unittest.cc b/cc/output/delegating_renderer_unittest.cc
index 6cb532fe86bf0acb8b5ec35b264e3dd7b6f59f3c..b1e7c771a8e187e7f1c6cff60bb2514f5abaef02 100644
--- a/cc/output/delegating_renderer_unittest.cc
+++ b/cc/output/delegating_renderer_unittest.cc
@@ -129,11 +129,12 @@ class DelegatingRendererTestResources : public DelegatingRendererTest {
 
     EXPECT_EQ(2u, last_frame.delegated_frame_data->render_pass_list.size());
     // Each render pass has 10 resources in it. And the root render pass has a
-    // mask resource used when drawing the child render pass. The number 10 may
-    // change if AppendOneOfEveryQuadType() is updated, and the value here
-    // should be updated accordingly.
+    // mask resource used when drawing the child render pass, as well as its
+    // replica (it's added twice). The number 10 may change if
+    // AppendOneOfEveryQuadType() is updated, and the value here should be
+    // updated accordingly.
     EXPECT_EQ(
-        21u, last_frame.delegated_frame_data->resource_list.size());
+        22u, last_frame.delegated_frame_data->resource_list.size());
 
     EndTest();
   }