tst_qvideoframe.cpp:736:68: warning: 'int QImage::byteCount() const' is deprecated: Use sizeInBytes [-Wdeprecated-declarations]
videowidget.cpp:103:49: warning: ‘const QBrush& QPalette::background() const’ is deprecated: Use QPalette::window() instead [-Wdeprecated-declarations]
videowidget.cpp:111:62: warning: ‘const QBrush& QPalette::background() const’ is deprecated: Use QPalette::window() instead [-Wdeprecated-declarations]

Change-Id: If6ba7de74c695cb5405ef7d3f9c5be8f94e3e522
Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>