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

cc/resources/prioritized_tile.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_RESOURCES_PRIORITIZED_TILE_H_
+#define CC_RESOURCES_PRIORITIZED_TILE_H_
+
+#include "cc/base/cc_export.h"
+#include "cc/resources/tile.h"
+#include "cc/resources/tile_priority.h"
+
+namespace cc {
+class PictureLayerTiling;
+
+class CC_EXPORT PrioritizedTile {
+ public:
+  PrioritizedTile();
+  ~PrioritizedTile();
+
+  Tile* tile() const { return tile_; }
+
+  void set_priority(TilePriority priority) { priority_ = priority; }
+  const TilePriority& priority() const { return priority_; }
+
+  void set_is_occluded(bool is_occluded) { is_occluded_ = is_occluded; }
+  bool is_occluded() const { return is_occluded_; }
+
+  void Invalidate() { tile_ = nullptr; }

[vmpstr, 2015/05/08 18:11:06]

This is a bit of an overused name. Can we name this something else?

[hendrikw, 2015/05/08 19:21:02]

Done.

+  void UpdateTile(Tile* tile, PictureLayerTiling* tiling);
+
+ private:
+  Tile* tile_;
+  TilePriority priority_;
+  bool is_occluded_;
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_PRIORITIZED_TILE_H_