cc: Unused resources should be given back to the child compositor

cc/delegated_renderer_layer_impl.h

Index: cc/delegated_renderer_layer_impl.h
diff --git a/cc/delegated_renderer_layer_impl.h b/cc/delegated_renderer_layer_impl.h
index cf23d8c34f93a3b5f5f58f43d7ceb4a3120b8d54..93037afc586d23961857de12af067a8ddbafcb5a 100644
--- a/cc/delegated_renderer_layer_impl.h
+++ b/cc/delegated_renderer_layer_impl.h
@@ -51,9 +51,6 @@ class CC_EXPORT DelegatedRendererLayerImpl : public LayerImpl {
   const ScopedPtrVector<RenderPass>& RenderPassesInDrawOrderForTesting() const {
     return render_passes_in_draw_order_;
   }
-  const ResourceProvider::ResourceIdSet& ResourcesForTesting() const {
-    return resources_;
-  }
 
  private:
   // Creates an ID with the resource provider for the child renderer
@@ -78,7 +75,6 @@ class CC_EXPORT DelegatedRendererLayerImpl : public LayerImpl {
 
   ScopedPtrVector<RenderPass> render_passes_in_draw_order_;
   base::hash_map<RenderPass::Id, int> render_passes_index_by_id_;
-  ResourceProvider::ResourceIdSet resources_;
 
   gfx::Size display_size_;
   int child_id_;