cc: Without valid frame, delegated renderer layer is not drawable

cc/delegated_renderer_layer_impl.h

 // Copyright 2012 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.
 
 #ifndef CC_DELEGATED_RENDERER_LAYER_IMPL_H_
 #define CC_DELEGATED_RENDERER_LAYER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/layer_impl.h"
@@ skipping 15 matching lines @@
   virtual bool hasDelegatedContent() const OVERRIDE;
   virtual bool hasContributingDelegatedRenderPasses() const OVERRIDE;
   virtual RenderPass::Id firstContributingRenderPassId() const OVERRIDE;
   virtual RenderPass::Id nextContributingRenderPassId(
       RenderPass::Id previous) const OVERRIDE;
   virtual void didLoseOutputSurface() OVERRIDE;
   virtual void appendQuads(
       QuadSink& quad_sink, AppendQuadsData& append_quads_data) OVERRIDE;
 
   // TODO(danakj): Make private
-  // This gives ownership of the RenderPasses to the layer.
   void SetRenderPasses(ScopedPtrVector<RenderPass>&);
   void ClearRenderPasses();
 
   void AppendContributingRenderPasses(RenderPassSink* render_pass_sink);
 
   void SetFrameData(scoped_ptr<DelegatedFrameData> frame_data,
                     gfx::RectF damage_in_frame);
 
   void SetDisplaySize(gfx::Size size);
 
@@ skipping 25 matching lines @@
   ScopedPtrVector<RenderPass> render_passes_in_draw_order_;
   base::hash_map<RenderPass::Id, int> render_passes_index_by_id_;
 
   gfx::Size display_size_;
   int child_id_;
 };
 
 }
 
 #endif  // CC_DELEGATED_RENDERER_LAYER_IMPL_H_