Forward capturer_id between DesktopFrame and its implementations

webrtc/modules/desktop_capture/desktop_and_cursor_composer.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 63 matching lines @@
 DesktopFrameWithCursor::DesktopFrameWithCursor(
     std::unique_ptr<DesktopFrame> frame,
     const MouseCursor& cursor,
     const DesktopVector& position)
     : DesktopFrame(frame->size(),
                    frame->stride(),
                    frame->data(),
                    frame->shared_memory()) {
   set_dpi(frame->dpi());
   set_capture_time_ms(frame->capture_time_ms());
+  set_capturer_id(frame->capturer_id());
   mutable_updated_region()->Swap(frame->mutable_updated_region());
   original_frame_ = std::move(frame);
 
   DesktopVector image_pos = position.subtract(cursor.hotspot());
   DesktopRect target_rect = DesktopRect::MakeSize(cursor.image()->size());
   target_rect.Translate(image_pos);
   DesktopVector target_origin = target_rect.top_left();
   target_rect.IntersectWith(DesktopRect::MakeSize(size()));
 
   if (target_rect.is_empty())
@@ skipping 77 matching lines @@
 }
 
 void DesktopAndCursorComposer::OnMouseCursorPosition(
     MouseCursorMonitor::CursorState state,
     const DesktopVector& position) {
   cursor_state_ = state;
   cursor_position_ = position;
 }
 
 }  // namespace webrtc