Forward capturer_id to shared desktopframe

webrtc/modules/desktop_capture/shared_desktop_frame.cc

 /*
  *  Copyright (c) 2013 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 19 matching lines @@
 }
 
 DesktopFrame* SharedDesktopFrame::GetUnderlyingFrame() {
   return core_->get();
 }
 
 std::unique_ptr<SharedDesktopFrame> SharedDesktopFrame::Share() {
   std::unique_ptr<SharedDesktopFrame> result(new SharedDesktopFrame(core_));
   result->set_dpi(dpi());
   result->set_capture_time_ms(capture_time_ms());
+  result->set_capturer_id(capturer_id());
   *result->mutable_updated_region() = updated_region();
   return result;
 }
 
 bool SharedDesktopFrame::IsShared() {
   return !core_->HasOneRef();
 }
 
 SharedDesktopFrame::SharedDesktopFrame(rtc::scoped_refptr<Core> core)
     : DesktopFrame((*core)->size(),
                    (*core)->stride(),
                    (*core)->data(),
                    (*core)->shared_memory()),
       core_(core) {}
 
 }  // namespace webrtc