Add VideoLayout message.

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 <utility>
 
 #include "base/bind.h"
@@ skipping 104 matching lines @@
   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 && !frame_size_.equals(frame->size())) {
+  if (frame && (!frame_size_.equals(frame->size()) ||
+                !frame_dpi_.equals(frame->dpi()))) {
     frame_size_ = frame->size();
+    frame_dpi_ = frame->dpi();
     if (!size_callback_.is_null())
-      size_callback_.Run(frame_size_);
+      size_callback_.Run(frame_size_, frame_dpi_);
   }
 
   // Even when |frame| is nullptr we still need to post it to the encode thread
   // to make sure frames are freed in the same order they are received and
   // that we don't start capturing frame n+2 before frame n is freed.
   base::PostTaskAndReplyWithResult(
       encode_task_runner_.get(), FROM_HERE,
       base::Bind(&VideoFramePump::EncodeFrame, encoder_.get(),
                  base::Passed(make_scoped_ptr(frame)),
                  base::Passed(&captured_frame_timestamps_)),
@@ skipping 122 matching lines @@
 }
 
 void VideoFramePump::OnKeepAlivePacketSent() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   keep_alive_timer_.Reset();
 }
 
 }  // namespace protocol
 }  // namespace remoting