cc: Introduce embedded_surfaces in metadata for surface Ids in draw quads

cc/layers/render_surface_impl.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_LAYERS_RENDER_SURFACE_IMPL_H_
 #define CC_LAYERS_RENDER_SURFACE_IMPL_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "cc/cc_export.h"
 #include "cc/layers/layer_collections.h"
 #include "cc/quads/render_pass.h"
 #include "cc/quads/shared_quad_state.h"
 #include "cc/trees/occlusion.h"
 #include "cc/trees/property_tree.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
+class AppendQuadsData;
 class DamageTracker;
 class FilterOperations;
 class Occlusion;
 class LayerImpl;
 class LayerTreeImpl;
 
-struct AppendQuadsData;
-
 class CC_EXPORT RenderSurfaceImpl {
  public:
   RenderSurfaceImpl(LayerTreeImpl* layer_tree_impl, int stable_effect_id);
   virtual ~RenderSurfaceImpl();
 
   // Returns the RenderSurfaceImpl that this render surface contributes to. Root
   // render surface's render_target is itself.
   RenderSurfaceImpl* render_target();
   const RenderSurfaceImpl* render_target() const;
 
@@ skipping 174 matching lines @@
   // surface, and that ignores outside occlusion. This can point to itself.
   const RenderSurfaceImpl* nearest_occlusion_immune_ancestor_;
 
   std::unique_ptr<DamageTracker> damage_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderSurfaceImpl);
 };
 
 }  // namespace cc
 #endif  // CC_LAYERS_RENDER_SURFACE_IMPL_H_