Revert of Delete unused and almost unused frame-related methods.

webrtc/video_frame.h

 /*
  *  Copyright (c) 2014 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 103 matching lines @@
   // Return true if underlying plane buffers are of zero size, false if not.
   bool IsZeroSize() const;
 
   // Return the underlying buffer. Never nullptr for a properly
   // initialized VideoFrame.
   // Creating a new reference breaks the HasOneRef and IsMutable
   // logic. So return a const ref to our reference.
   const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& video_frame_buffer()
       const;
 
+  // Set the underlying buffer.
+  void set_video_frame_buffer(
+      const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& buffer);
+
+  // Convert native-handle frame to memory-backed I420 frame. Should not be
+  // called on a non-native-handle frame.
+  VideoFrame ConvertNativeToI420Frame() const;
+
   // Return true if the frame is stored in a texture.
   bool is_texture() {
     return video_frame_buffer() &&
            video_frame_buffer()->native_handle() != nullptr;
   }
 
  private:
   // An opaque reference counted handle that stores the pixel data.
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer_;
   uint32_t timestamp_;
@@ skipping 45 matching lines @@
   int qp_ = -1;  // Quantizer value.
 
   // When an application indicates non-zero values here, it is taken as an
   // indication that all future frames will be constrained with those limits
   // until the application indicates a change again.
   PlayoutDelay playout_delay_ = {-1, -1};
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_FRAME_H_