Deletes the class VideoRendererCallback.

webrtc/modules/video_render/ios/video_render_ios_impl.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 16 matching lines @@
   explicit VideoRenderIosImpl(const int32_t id,
                               void* window,
                               const bool full_screen);
 
   ~VideoRenderIosImpl();
 
   // Implementation of 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;
 
   int32_t GetIncomingRenderStreamProperties(const uint32_t stream_id,
                                             uint32_t& z_order,
                                             float& left,
                                             float& top,
                                             float& right,
                                             float& bottom) const override;
 
@@ skipping 43 matching lines @@
  private:
   int32_t id_;
   void* ptr_window_;
   bool full_screen_;
 
   CriticalSectionWrapper* crit_sec_;
   std::unique_ptr<VideoRenderIosGles20> ptr_ios_render_;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_VIDEO_RENDER_IOS_VIDEO_RENDER_IOS_IMPL_H_