Plumb overlay processing into DirectRenderer.

cc/quads/render_pass.h

Index: cc/quads/render_pass.h
diff --git a/cc/quads/render_pass.h b/cc/quads/render_pass.h
index 5cada2a2f146ac4906cff82495cf91386c6a992e..4285e53010311d27d7b4fd58ddb70f81b15354c0 100644
--- a/cc/quads/render_pass.h
+++ b/cc/quads/render_pass.h
@@ -62,11 +62,6 @@ class CC_EXPORT RenderPass {
     }
   };
 
-  // Specifies whether the pass is going into an overlay, needs to be rendered
-  // into a buffer before it can be presented to overlay hardware or a quad
-  // inside it is presented as is.
-  enum OverlayState { NO_OVERLAY, RENDER_AND_OVERLAY, SIMPLE_OVERLAY, };
-
   ~RenderPass();
 
   static scoped_ptr<RenderPass> Create();
@@ -89,8 +84,7 @@ class CC_EXPORT RenderPass {
               const gfx::Rect& output_rect,
               const gfx::RectF& damage_rect,
               const gfx::Transform& transform_to_root_target,
-              bool has_transparent_background,
-              OverlayState overlay_state);
+              bool has_transparent_background);
 
   scoped_ptr<base::Value> AsValue() const;
 
@@ -117,8 +111,6 @@ class CC_EXPORT RenderPass {
   QuadList quad_list;
   SharedQuadStateList shared_quad_state_list;
 
-  OverlayState overlay_state;
-
  protected:
   explicit RenderPass(size_t num_layers);
   RenderPass();