Add posciak and wuchengli to WebRTC HW decoder and encoder files

content/renderer/media/gpu/rtc_video_encoder.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_RENDERER_MEDIA_RTC_VIDEO_ENCODER_H_
-#define CONTENT_RENDERER_MEDIA_RTC_VIDEO_ENCODER_H_
+#ifndef CONTENT_RENDERER_MEDIA_GPU_RTC_VIDEO_ENCODER_H_
+#define CONTENT_RENDERER_MEDIA_GPU_RTC_VIDEO_ENCODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 56 matching lines @@
   const scoped_refptr<base::SingleThreadTaskRunner> gpu_task_runner_;
 
   // The RTCVideoEncoder::Impl that does all the work.
   scoped_refptr<Impl> impl_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoEncoder);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_ENCODER_H_
+#endif  // CONTENT_RENDERER_MEDIA_GPU_RTC_VIDEO_ENCODER_H_