/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp: In member function ‘void QtWebEngineCore::DelegatedFrameNode::commit(QtWebEngineCore::ChromiumCompositorData*, cc::ReturnedResourceArray*, QtWebEngineCore::RenderWidgetHostViewQtDelegate*)’:
/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:543:26: error: invalid use of incomplete type ‘class QSGImageNode’
                 imageNode->setTargetRect(toQt(quad->rect));
                          ^
In file included from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.h:55:0,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:49:
/home/qt/work/qt/qtwebengine/src/core/render_widget_host_view_qt_delegate.h:52:7: note: forward declaration of ‘class QSGImageNode’
 class QSGImageNode;
       ^
/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:544:26: error: invalid use of incomplete type ‘class QSGImageNode’
                 imageNode->setInnerTargetRect(toQt(quad->rect));
                          ^
In file included from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.h:55:0,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:49:
/home/qt/work/qt/qtwebengine/src/core/render_widget_host_view_qt_delegate.h:52:7: note: forward declaration of ‘class QSGImageNode’
 class QSGImageNode;
       ^
/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:545:26: error: invalid use of incomplete type ‘class QSGImageNode’
                 imageNode->setTexture(layer);
                          ^
In file included from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.h:55:0,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:49:
/home/qt/work/qt/qtwebengine/src/core/render_widget_host_view_qt_delegate.h:52:7: note: forward declaration of ‘class QSGImageNode’
 class QSGImageNode;
       ^
/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:546:26: error: invalid use of incomplete type ‘class QSGImageNode’
                 imageNode->update();
                          ^
In file included from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.h:55:0,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:49:
/home/qt/work/qt/qtwebengine/src/core/render_widget_host_view_qt_delegate.h:52:7: note: forward declaration of ‘class QSGImageNode’
 class QSGImageNode;
       ^
/home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:547:61: error: no matching function for call to ‘QSGNode::appendChildNode(QSGImageNode*&)’
                 currentLayerChain->appendChildNode(imageNode);
                                                             ^
In file included from /home/qt/work/install/include/QtQuick/QSGNode:1:0,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.h:49,
                 from /home/qt/work/qt/qtwebengine/src/core/delegated_frame_node.cpp:49:
/home/qt/work/install/include/QtQuick/qsgnode.h:138:10: note: candidate: void QSGNode::appendChildNode(QSGNode*)
     void appendChildNode(QSGNode *node);
          ^
/home/qt/work/install/include/QtQuick/qsgnode.h:138:10: note:   no known conversion for argument 1 from ‘QSGImageNode*’ to ‘QSGNode*’
ninja: build stopped: subcommand failed.
make[3]: *** [invoke_ninja] Error 1
make[3]: Leaving directory `/home/qt/work/qt/qtwebengine/src/core'
make[2]: *** [sub-gyp_run-pro-make_first] Error 2
make[2]: Leaving directory `/home/qt/work/qt/qtwebengine/src/core'
make[1]: *** [sub-core-make_first] Error 2
make[1]: Leaving directory `/home/qt/work/qt/qtwebengine/src'
make: *** [sub-src-make_first] Error 2