cc: Implement tile iteration order based on pyramid sequence. [old]

cc/tiles/tiling_set_raster_queue_all.cc

Index: cc/tiles/tiling_set_raster_queue_all.cc
diff --git a/cc/tiles/tiling_set_raster_queue_all.cc b/cc/tiles/tiling_set_raster_queue_all.cc
index ec5e4132773ed09fa91c65c1194a5fd06048b967..c6f2130526a6c8861b36ed20fd397bba5f8a6629 100644
--- a/cc/tiles/tiling_set_raster_queue_all.cc
+++ b/cc/tiles/tiling_set_raster_queue_all.cc
@@ -363,9 +363,23 @@ TilingSetRasterQueueAll::TilingIterator::TilingIterator(
   current_tile_ = *visible_iterator_;
 }
 
+TilingSetRasterQueueAll::TilingIterator::TilingIterator(
+    const TilingSetRasterQueueAll::TilingIterator& other) = default;
+
+TilingSetRasterQueueAll::TilingIterator::TilingIterator(
+    TilingSetRasterQueueAll::TilingIterator&& other) = default;
+
 TilingSetRasterQueueAll::TilingIterator::~TilingIterator() {
 }
 
+TilingSetRasterQueueAll::TilingIterator&
+TilingSetRasterQueueAll::TilingIterator::operator=(
+    const TilingSetRasterQueueAll::TilingIterator& other) = default;
+
+TilingSetRasterQueueAll::TilingIterator&
+TilingSetRasterQueueAll::TilingIterator::operator=(
+    TilingSetRasterQueueAll::TilingIterator&& other) = default;
+
 void TilingSetRasterQueueAll::TilingIterator::AdvancePhase() {
   DCHECK_LT(phase_, Phase::EVENTUALLY_RECT);