cc: Separate the priority from the tile and put in new PrioritizedTile

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index 2d24c4d520904f5d875eb76cc2195db2c0a053dd..4d41ebff7844d0be6406f50daaa2b72555c5e825 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -8,13 +8,13 @@
 #include "base/memory/ref_counted.h"
 #include "cc/resources/raster_source.h"
 #include "cc/resources/tile_draw_info.h"
-#include "cc/resources/tile_priority.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace cc {
 
 class TileManager;
+struct TilePriority;
 
 class CC_EXPORT Tile {
  public:
@@ -35,14 +35,6 @@ class CC_EXPORT Tile {
 
   const RasterSource* raster_source() const { return raster_source_.get(); }
 
-  const TilePriority& priority() const { return priority_; }
-
-  void set_priority(const TilePriority& priority) { priority_ = priority; }
-
-  // TODO(vmpstr): Move this to the iterators.
-  void set_is_occluded(bool is_occluded) { is_occluded_ = is_occluded; }
-  bool is_occluded() const { return is_occluded_; }
-
   // TODO(vmpstr): Move this to the iterators.
   bool required_for_activation() const { return required_for_activation_; }
   void set_required_for_activation(bool is_required) {
@@ -121,9 +113,7 @@ class CC_EXPORT Tile {
   gfx::Size desired_texture_size_;
   gfx::Rect content_rect_;
   float contents_scale_;
-  bool is_occluded_;
 
-  TilePriority priority_;
   TileDrawInfo draw_info_;
 
   int layer_id_;