Revert of Delete video_render module.

webrtc/modules/video_render/ios/video_render_ios_channel.h

Index: webrtc/modules/video_render/ios/video_render_ios_channel.h
diff --git a/webrtc/modules/video_render/ios/video_render_ios_channel.h b/webrtc/modules/video_render/ios/video_render_ios_channel.h
new file mode 100644
index 0000000000000000000000000000000000000000..a15ba393dc0cad51acf347f9dea0b7d11f65ffee
--- /dev/null
+++ b/webrtc/modules/video_render/ios/video_render_ios_channel.h
@@ -0,0 +1,45 @@
+/*
+ *  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.
+ */
+
+#ifndef WEBRTC_MODULES_VIDEO_RENDER_IOS_VIDEO_RENDER_IOS_CHANNEL_H_
+#define WEBRTC_MODULES_VIDEO_RENDER_IOS_VIDEO_RENDER_IOS_CHANNEL_H_
+
+#include "webrtc/modules/video_render/video_render_defines.h"
+#include "webrtc/modules/video_render/ios/video_render_ios_view.h"
+
+namespace webrtc {
+
+class VideoRenderIosGles20;
+
+class VideoRenderIosChannel : public VideoRenderCallback {
+ public:
+  explicit VideoRenderIosChannel(VideoRenderIosView* view);
+  virtual ~VideoRenderIosChannel();
+
+  // Implementation of VideoRenderCallback.
+  int32_t RenderFrame(const uint32_t stream_id,
+                      const VideoFrame& video_frame) override;
+
+  int SetStreamSettings(const float z_order,
+                        const float left,
+                        const float top,
+                        const float right,
+                        const float bottom);
+  bool IsUpdated();
+  bool RenderOffScreenBuffer();
+
+ private:
+  VideoRenderIosView* view_;
+  VideoFrame* current_frame_;
+  bool buffer_is_updated_;
+};
+
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_VIDEO_RENDER_IOS_VIDEO_RENDER_IOS_CHANNEL_H_