Deletes the class VideoRendererCallback.

webrtc/modules/video_render/ios/video_render_ios_impl.h

Index: webrtc/modules/video_render/ios/video_render_ios_impl.h
diff --git a/webrtc/modules/video_render/ios/video_render_ios_impl.h b/webrtc/modules/video_render/ios/video_render_ios_impl.h
index 04a74933008775d9faad4be6ca071367ff42e726..59abe6f3a1a9e5f732e88f0e21fbd9a42f684f4e 100644
--- a/webrtc/modules/video_render/ios/video_render_ios_impl.h
+++ b/webrtc/modules/video_render/ios/video_render_ios_impl.h
@@ -34,12 +34,13 @@ class VideoRenderIosImpl : IVideoRender {
   int32_t Init() override;
   int32_t ChangeWindow(void* window) override;
 
-  VideoRenderCallback* AddIncomingRenderStream(const uint32_t stream_id,
-                                               const uint32_t z_order,
-                                               const float left,
-                                               const float top,
-                                               const float right,
-                                               const float bottom) override;
+  rtc::VideoSinkInterface<VideoFrame>* AddIncomingRenderStream(
+      const uint32_t stream_id,
+      const uint32_t z_order,
+      const float left,
+      const float top,
+      const float right,
+      const float bottom) override;
 
   int32_t DeleteIncomingRenderStream(const uint32_t stream_id) override;