am de5c15b8: Merge "SF: Always perform sideband transactions"

        const bool resizePending = (c.requested.w != c.active.w) ||

                                   (c.requested.h != c.active.h);

        if (resizePending) {

        if (resizePending && mSidebandStream == NULL) {

            // don't let Layer::doTransaction update the drawing state

            // if we have a pending resize, unless we are in fixed-size mode.

            // the drawing state will be updated only once we receive a buffer

            // in particular, we want to make sure the clip (which is part

            // of the geometry state) is latched together with the size but is

            // latched immediately when no resizing is involved.

            //

            // If a sideband stream is attached, however, we want to skip this

            // optimization so that transactions aren't missed when a buffer

            // never arrives

            flags |= eDontUpdateGeometryState;

        }