List all child surfaces (including occluded) in CompositorFrame

cc/quads/render_pass.h

 // Copyright 2011 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_QUADS_RENDER_PASS_H_
 #define CC_QUADS_RENDER_PASS_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 99 matching lines @@
 
   // If non-empty, the renderer should produce a copy of the render pass'
   // contents as a bitmap, and give a copy of the bitmap to each callback in
   // this list. This property should not be serialized between compositors, as
   // it only makes sense in the root compositor.
   std::vector<scoped_ptr<CopyOutputRequest>> copy_requests;
 
   QuadList quad_list;
   SharedQuadStateList shared_quad_state_list;
 
-  // This vector contains the complete set of SurfaceIds referenced by
-  // DrawQuads in quad_list.
-  std::vector<SurfaceId> referenced_surfaces;
-
  protected:
   explicit RenderPass(size_t num_layers);
   RenderPass();
   RenderPass(size_t shared_quad_state_list_size, size_t quad_list_size);
 
  private:
   template <typename DrawQuadType>
   DrawQuadType* CopyFromAndAppendTypedDrawQuad(const DrawQuad* quad) {
     return quad_list.AllocateAndCopyFrom(DrawQuadType::MaterialCast(quad));
   }
@@ skipping 11 matching lines @@
   }
 };
 }  // namespace BASE_HASH_NAMESPACE
 
 namespace cc {
 typedef std::vector<scoped_ptr<RenderPass>> RenderPassList;
 typedef base::hash_map<RenderPassId, RenderPass*> RenderPassIdHashMap;
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_H_