Merge change 21225 into eclair

Point Layer::getPhysicalSize() const

{

    sp<const Buffer> front(frontBuffer().getBuffer());

    return Point(front->getWidth(), front->getHeight());

    Point size(front->getWidth(), front->getHeight());

    if ((size.x | size.y) == 0) {

        // if we don't have a buffer yet, just use the state's size.

        size = LayerBase::getPhysicalSize();

    }

    return size;

}

void Layer::unlockPageFlip(