cc: Implement tiling iterator based on pyramid sequence.

cc/tiles/tiling_set_raster_queue_all.h

Index: cc/tiles/tiling_set_raster_queue_all.h
diff --git a/cc/tiles/tiling_set_raster_queue_all.h b/cc/tiles/tiling_set_raster_queue_all.h
index c49a37e79284c78fb7dfaa711c4f7615b4654425..c15bc58c048835baca424e27ff704eb2372146f0 100644
--- a/cc/tiles/tiling_set_raster_queue_all.h
+++ b/cc/tiles/tiling_set_raster_queue_all.h
@@ -38,6 +38,13 @@ class CC_EXPORT TilingSetRasterQueueAll {
         PictureLayerTiling* tiling,
         TilingData* tiling_data,
         PictureLayerTiling::PriorityRectType priority_rect_type);
+    OnePriorityRectIterator(const OnePriorityRectIterator& other) = default;
+    OnePriorityRectIterator(OnePriorityRectIterator&& other) = default;
+
+    OnePriorityRectIterator& operator=(const OnePriorityRectIterator& other) =
+        default;
+    OnePriorityRectIterator& operator=(OnePriorityRectIterator&& other) =
+        default;
 
     bool done() const { return !current_tile_.tile(); }
     const PrioritizedTile& operator*() const { return current_tile_; }
@@ -66,6 +73,12 @@ class CC_EXPORT TilingSetRasterQueueAll {
    public:
     VisibleTilingIterator() = default;
     VisibleTilingIterator(PictureLayerTiling* tiling, TilingData* tiling_data);
+    VisibleTilingIterator(const VisibleTilingIterator& other) = default;
+    VisibleTilingIterator(VisibleTilingIterator&& other) = default;
+
+    VisibleTilingIterator& operator=(const VisibleTilingIterator& other) =
+        default;
+    VisibleTilingIterator& operator=(VisibleTilingIterator&& other) = default;
 
     VisibleTilingIterator& operator++();
 
@@ -78,6 +91,15 @@ class CC_EXPORT TilingSetRasterQueueAll {
     PendingVisibleTilingIterator() = default;
     PendingVisibleTilingIterator(PictureLayerTiling* tiling,
                                  TilingData* tiling_data);
+    PendingVisibleTilingIterator(const PendingVisibleTilingIterator& other) =
+        default;
+    PendingVisibleTilingIterator(PendingVisibleTilingIterator&& other) =
+        default;
+
+    PendingVisibleTilingIterator& operator=(
+        const PendingVisibleTilingIterator& other) = default;
+    PendingVisibleTilingIterator& operator=(
+        PendingVisibleTilingIterator&& other) = default;
 
     PendingVisibleTilingIterator& operator++();
 
@@ -90,6 +112,12 @@ class CC_EXPORT TilingSetRasterQueueAll {
    public:
     SkewportTilingIterator() = default;
     SkewportTilingIterator(PictureLayerTiling* tiling, TilingData* tiling_data);
+    SkewportTilingIterator(const SkewportTilingIterator& other) = default;
+    SkewportTilingIterator(SkewportTilingIterator&& other) = default;
+
+    SkewportTilingIterator& operator=(const SkewportTilingIterator& other) =
+        default;
+    SkewportTilingIterator& operator=(SkewportTilingIterator&& other) = default;
 
     SkewportTilingIterator& operator++();
 
@@ -103,6 +131,13 @@ class CC_EXPORT TilingSetRasterQueueAll {
     SoonBorderTilingIterator() = default;
     SoonBorderTilingIterator(PictureLayerTiling* tiling,
                              TilingData* tiling_data);
+    SoonBorderTilingIterator(const SoonBorderTilingIterator& other) = default;
+    SoonBorderTilingIterator(SoonBorderTilingIterator&& other) = default;
+
+    SoonBorderTilingIterator& operator=(const SoonBorderTilingIterator& other) =
+        default;
+    SoonBorderTilingIterator& operator=(SoonBorderTilingIterator&& other) =
+        default;
 
     SoonBorderTilingIterator& operator++();
 
@@ -116,6 +151,13 @@ class CC_EXPORT TilingSetRasterQueueAll {
     EventuallyTilingIterator() = default;
     EventuallyTilingIterator(PictureLayerTiling* tiling,
                              TilingData* tiling_data);
+    EventuallyTilingIterator(const EventuallyTilingIterator& other) = default;
+    EventuallyTilingIterator(EventuallyTilingIterator&& other) = default;
+
+    EventuallyTilingIterator& operator=(const EventuallyTilingIterator& other) =
+        default;
+    EventuallyTilingIterator& operator=(EventuallyTilingIterator&& other) =
+        default;
 
     EventuallyTilingIterator& operator++();
 
@@ -130,8 +172,13 @@ class CC_EXPORT TilingSetRasterQueueAll {
     TilingIterator();
     explicit TilingIterator(PictureLayerTiling* tiling,
                             TilingData* tiling_data);
+    TilingIterator(const TilingIterator& other);
+    TilingIterator(TilingIterator&& other);
     ~TilingIterator();
 
+    TilingIterator& operator=(const TilingIterator& other);
+    TilingIterator& operator=(TilingIterator&& other);
+
     bool done() const { return !current_tile_.tile(); }
     const PrioritizedTile& operator*() const { return current_tile_; }
     TilePriority::PriorityBin type() const {