Prime the landing pad for the new video rendering pipeline.

media/renderers/renderer_impl.h

Index: media/renderers/renderer_impl.h
diff --git a/media/renderers/renderer_impl.h b/media/renderers/renderer_impl.h
index 03942d52f3e863002a8809593c9e598b76f5c2cb..b826af0fc92840f6961a1d861c307ff2c942016c 100644
--- a/media/renderers/renderer_impl.h
+++ b/media/renderers/renderer_impl.h
@@ -47,7 +47,6 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
                   const PipelineStatusCB& init_cb,
                   const StatisticsCB& statistics_cb,
                   const BufferingStateCB& buffering_state_cb,
-                  const PaintCB& paint_cb,
                   const base::Closure& ended_cb,
                   const PipelineStatusCB& error_cb,
                   const base::Closure& waiting_for_decryption_key_cb) final;
@@ -133,7 +132,6 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
   base::Closure ended_cb_;
   PipelineStatusCB error_cb_;
   BufferingStateCB buffering_state_cb_;
-  PaintCB paint_cb_;
   base::Closure waiting_for_decryption_key_cb_;
 
   // Temporary callback used for Initialize() and Flush().