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 5d49275716948464ffc746b9aaf5510bfd24c081..25d14588daf315f77a8583d1177ba78bde9cadbd 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -84,10 +84,9 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
     }
   }
 
-  void MarkRequiredForActivation();
-
-  bool required_for_activation() const {
-    return priority_[PENDING_TREE].required_for_activation;
+  bool required_for_activation() const { return required_for_activation_; }
+  void set_required_for_activation(bool is_required) {
+    required_for_activation_ = is_required;
   }
 
   bool use_picture_analysis() const {
@@ -95,7 +94,9 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   }
 
   bool NeedsRasterForMode(RasterMode mode) const {
-    return !managed_state_.tile_versions[mode].IsReadyToDraw();
+    return managed_state_.tile_versions[mode].mode() ==
+               ManagedTileState::TileVersion::PICTURE_PILE_MODE ||
+           !managed_state_.tile_versions[mode].IsReadyToDraw();
   }
 
   bool HasResources() const {
@@ -147,6 +148,13 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   RasterMode DetermineRasterModeForTree(WhichTree tree) const;
   RasterMode DetermineOverallRasterMode() const;
 
+  void set_tiling_index(int i, int j) {
+    tiling_i_index_ = i;
+    tiling_j_index_ = j;
+  }
+  int tiling_i_index() const { return tiling_i_index_; }
+  int tiling_j_index() const { return tiling_j_index_; }
+
   // Functionality used in tests.
   RasterMode GetRasterModeForTesting() const {
     return managed_state().raster_mode;
@@ -194,6 +202,9 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   int source_frame_number_;
   int flags_;
   bool is_shared_;
+  int tiling_i_index_;
+  int tiling_j_index_;
+  bool required_for_activation_;
 
   Id id_;
   static Id s_next_id_;