decoding_state.h missing <cstddef>

qt5/qtwebengine/src/3rdparty/chromium/third_party/webrtc/modules/video_coding/decoding_state.cc fails to compile. In decoding_state.h, VCMDecodingState defines multiple function parameters that would best be converted to Qt types: uint16_t and uint32_t. Instead of hunting down every instance, adding QtGlobal quint16 quint32, suggest adding

#include <cstdint>

Perhaps a vestige from converting C code to C++? QtWebEngine chromium thirdparty code would benefit from being converted to Qt.