cc: Start using raster/eviction iterators.

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index 716ea99024703a4e4e8b0363d8d427201770ff6a..230fee0878712ff2a17f5a12d96c08330cb935ac 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -60,11 +60,9 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
 
   void SetPriority(WhichTree tree, const TilePriority& priority);
 
-  void MarkRequiredForActivation();
+  void set_required_for_activation(bool is_required);
 
-  bool required_for_activation() const {
-    return priority_[PENDING_TREE].required_for_activation;
-  }
+  bool required_for_activation() const { return required_for_activation_; }
 
   bool use_picture_analysis() const {
     return !!(flags_ & USE_PICTURE_ANALYSIS);
@@ -120,6 +118,20 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   RasterMode DetermineRasterModeForTree(WhichTree tree) const;
   RasterMode DetermineOverallRasterMode() const;
 
+  void set_tiling_index(int row, int column) {
+    tiling_i_index_ = row;
+    tiling_j_index_ = column;
+  }
+
+  int tiling_i_index() const {
+    DCHECK_GE(tiling_i_index_, 0);
+    return tiling_i_index_;
+  }
+  int tiling_j_index() const {
+    DCHECK_GE(tiling_j_index_, 0);
+    return tiling_j_index_;
+  }
+
   // Functionality used in tests.
   RasterMode GetRasterModeForTesting() const {
     return managed_state().raster_mode;
@@ -157,7 +169,6 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   const ManagedTileState& managed_state() const { return managed_state_; }
   RasterMode DetermineRasterModeForResolution(TileResolution resolution) const;
 
-  TileManager* tile_manager_;
   scoped_refptr<PicturePileImpl> picture_pile_;
   gfx::Rect tile_size_;
   gfx::Rect content_rect_;
@@ -170,6 +181,9 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   int layer_id_;
   int source_frame_number_;
   int flags_;
+  int tiling_i_index_;
+  int tiling_j_index_;
+  bool required_for_activation_;
 
   Id id_;
   static Id s_next_id_;