Revert of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/RTCVideoRendererAdapter.mm

+/*
+ *  Copyright 2015 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.
+ */
+
+#import "RTCVideoRendererAdapter+Private.h"
+
+#import "RTCVideoFrame+Private.h"
+
+#include <memory>
+
+namespace webrtc {
+
+class VideoRendererAdapter
+    : public rtc::VideoSinkInterface<webrtc::VideoFrame> {
+ public:
+  VideoRendererAdapter(RTCVideoRendererAdapter* adapter) {
+    adapter_ = adapter;
+    size_ = CGSizeZero;
+  }
+
+  void OnFrame(const webrtc::VideoFrame& nativeVideoFrame) override {
+    RTCVideoFrame* videoFrame = [[RTCVideoFrame alloc]
+        initWithVideoBuffer:nativeVideoFrame.video_frame_buffer()
+                   rotation:static_cast<RTCVideoRotation>(
+                                nativeVideoFrame.rotation())
+                timeStampNs:nativeVideoFrame.timestamp_us() *
+                            rtc::kNumNanosecsPerMicrosec];
+    CGSize current_size = (videoFrame.rotation % 180 == 0)
+                              ? CGSizeMake(videoFrame.width, videoFrame.height)
+                              : CGSizeMake(videoFrame.height, videoFrame.width);
+
+    if (!CGSizeEqualToSize(size_, current_size)) {
+      size_ = current_size;
+      [adapter_.videoRenderer setSize:size_];
+    }
+    [adapter_.videoRenderer renderFrame:videoFrame];
+  }
+
+ private:
+  __weak RTCVideoRendererAdapter *adapter_;
+  CGSize size_;
+};
+}
+
+@implementation RTCVideoRendererAdapter {
+  std::unique_ptr<webrtc::VideoRendererAdapter> _adapter;
+}
+
+@synthesize videoRenderer = _videoRenderer;
+
+- (instancetype)initWithNativeRenderer:(id<RTCVideoRenderer>)videoRenderer {
+  NSParameterAssert(videoRenderer);
+  if (self = [super init]) {
+    _videoRenderer = videoRenderer;
+    _adapter.reset(new webrtc::VideoRendererAdapter(self));
+  }
+  return self;
+}
+
+- (rtc::VideoSinkInterface<webrtc::VideoFrame> *)nativeVideoRenderer {
+  return _adapter.get();
+}
+
+@end