cc: refcount resources as we send them to the parent

cc/output/delegating_renderer_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/delegating_renderer.h"
 
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/layer_tree_test.h"
 #include "cc/test/render_pass_test_common.h"
 #include "cc/test/render_pass_test_utils.h"
@@ skipping 111 matching lines @@
   virtual void SwapBuffersOnThread(LayerTreeHostImpl* host_impl,
                                    bool result) OVERRIDE {
     EXPECT_TRUE(result);
     EXPECT_EQ(1u, output_surface_->num_sent_frames());
 
     const CompositorFrame& last_frame = output_surface_->last_sent_frame();
     ASSERT_TRUE(last_frame.delegated_frame_data);
 
     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();
   }
 };
 
 SINGLE_AND_MULTI_THREAD_DELEGATING_RENDERER_TEST_F(
     DelegatingRendererTestResources);
 
 }  // namespace cc