Merge "SurfaceFlinger: Forward pending buffer release to children."

            // abandon the buffer queue.

            if (l->isRemovedFromCurrentState()) {

                l->destroyAllHwcLayers();

                l->releasePendingBuffer(systemTime());

                // destroyAllHwcLayers traverses to children, but releasePendingBuffer

                // doesn't in other scenarios. So we have to traverse explicitly here.

                l->traverseInZOrder(LayerVector::StateSet::Drawing, [&](Layer* child) {

                    child->releasePendingBuffer(systemTime());

                });

            }

        }

        mLayersPendingRemoval.clear();