PairedPictureLayerIterator 1415 cc/resources/tile_manager.cc     PairedPictureLayerIterator() {}
PairedPictureLayerIterator 1418 cc/resources/tile_manager.cc     ~PairedPictureLayerIterator() {}
PairedPictureLayerIterator   73 cc/resources/tile_manager.h     struct PairedPictureLayerIterator {