Remove webrtc::DesktopCapturer::Callback::CreateSharedMemory() overrides.

remoting/protocol/video_frame_pump.cc

 // Copyright 2015 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.
 
 #include "remoting/protocol/video_frame_pump.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 
@@ skipping 94 matching lines @@
   encode_task_runner_->PostTask(
       FROM_HERE, base::Bind(&VideoEncoder::SetLosslessColor,
                             base::Unretained(encoder_.get()), want_lossless));
 }
 
 void VideoFramePump::SetSizeCallback(const SizeCallback& size_callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   size_callback_ = size_callback;
 }
 
-webrtc::SharedMemory* VideoFramePump::CreateSharedMemory(size_t size) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return nullptr;
-}
-
 void VideoFramePump::OnCaptureCompleted(webrtc::DesktopFrame* frame) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   capture_scheduler_.OnCaptureCompleted();
 
   captured_frame_timestamps_->capture_ended_time = base::TimeTicks::Now();
 
   if (frame) {
     webrtc::DesktopVector dpi =
         frame->dpi().is_zero() ? webrtc::DesktopVector(kDefaultDpi, kDefaultDpi)
@@ skipping 140 matching lines @@
 }
 
 void VideoFramePump::OnKeepAlivePacketSent() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   keep_alive_timer_.Reset();
 }
 
 }  // namespace protocol
 }  // namespace remoting