hschlueter 73b57d3c77 Implement chaining GlTextureProcessor.Listener.
In follow-ups the FrameProcessorChain will set an instance of this
listener for each GlTextureProcessor to chain it with its previous
and next GlTextureProcesssor.

PiperOrigin-RevId: 455628942
(cherry picked from commit 981baae7095ef34c548df600bfbea1f7765dbb9e)
2022-06-17 16:57:46 +01:00
..