Refactoring for merging ManagedTileState into Tile.

cc/resources/managed_tile_state.h

-// Copyright 2013 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_MANAGED_TILE_STATE_H_
-#define CC_RESOURCES_MANAGED_TILE_STATE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/resources/platform_color.h"
-#include "cc/resources/resource_pool.h"
-#include "cc/resources/resource_provider.h"
-#include "cc/resources/scoped_resource.h"
-#include "cc/resources/tile_priority.h"
-#include "cc/resources/tile_task_runner.h"
-
-namespace cc {
-
-// This is state that is specific to a tile that is
-// managed by the TileManager.
-class CC_EXPORT ManagedTileState {
- public:
-  // This class holds all the state relevant to drawing a tile.
-  class CC_EXPORT DrawInfo {
-   public:
-    enum Mode { RESOURCE_MODE, SOLID_COLOR_MODE, PICTURE_PILE_MODE };
-
-    DrawInfo();
-    ~DrawInfo();
-
-    Mode mode() const { return mode_; }
-
-    bool IsReadyToDraw() const;
-
-    ResourceProvider::ResourceId get_resource_id() const {
-      DCHECK(mode_ == RESOURCE_MODE);
-      DCHECK(resource_);
-
-      return resource_->id();
-    }
-
-    SkColor get_solid_color() const {
-      DCHECK(mode_ == SOLID_COLOR_MODE);
-
-      return solid_color_;
-    }
-
-    bool contents_swizzled() const {
-      DCHECK(resource_);
-      return !PlatformColor::SameComponentOrder(resource_->format());
-    }
-
-    bool requires_resource() const {
-      return mode_ == RESOURCE_MODE || mode_ == PICTURE_PILE_MODE;
-    }
-
-    inline bool has_resource() const { return !!resource_; }
-
-    void SetSolidColorForTesting(SkColor color) { set_solid_color(color); }
-    void SetResourceForTesting(scoped_ptr<ScopedResource> resource) {
-      resource_ = resource.Pass();
-    }
-
-   private:
-    friend class TileManager;
-    friend class PrioritizedTileSet;
-    friend class Tile;
-    friend class ManagedTileState;
-
-    void set_use_resource() { mode_ = RESOURCE_MODE; }
-
-    void set_solid_color(const SkColor& color) {
-      mode_ = SOLID_COLOR_MODE;
-      solid_color_ = color;
-    }
-
-    void set_rasterize_on_demand() { mode_ = PICTURE_PILE_MODE; }
-
-    Mode mode_;
-    SkColor solid_color_;
-    scoped_ptr<ScopedResource> resource_;
-  };
-
-  ManagedTileState();
-  ~ManagedTileState();
-
-  void AsValueInto(base::debug::TracedValue* dict) const;
-
-  // Persisted state: valid all the time.
-  DrawInfo draw_info;
-  scoped_refptr<RasterTask> raster_task;
-
-  TileResolution resolution;
-  TilePriority::PriorityBin priority_bin;
-
-  // Priority for this state from the last time we assigned memory.
-  unsigned scheduled_priority;
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_MANAGED_TILE_STATE_H_