cc: Do not ignore layers without valid priorities during eviction.

cc/test/fake_picture_layer_tiling_client.h

 // Copyright 2012 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_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 #define CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 
 #include "cc/resources/picture_layer_tiling.h"
 #include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_manager.h"
 #include "cc/test/fake_tile_manager_client.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace cc {
 
 class FakePictureLayerTilingClient : public PictureLayerTilingClient {
  public:
   FakePictureLayerTilingClient();
   explicit FakePictureLayerTilingClient(ResourceProvider* resource_provider);
   ~FakePictureLayerTilingClient() override;
 
   // PictureLayerTilingClient implementation.
   scoped_refptr<Tile> CreateTile(PictureLayerTiling* tiling,
                                  const gfx::Rect& rect) override;
   RasterSource* GetRasterSource() override;
   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override;
+  TilePriority::PriorityBin GetMaxTilePriorityBin() const override;
   size_t GetMaxTilesForInterestArea() const override;
   float GetSkewportTargetTimeInSeconds() const override;
   int GetSkewportExtrapolationLimitInContentPixels() const override;
   bool RequiresHighResToDraw() const override;
 
   void SetTileSize(const gfx::Size& tile_size);
   gfx::Size TileSize() const { return tile_size_; }
 
   const Region* GetPendingInvalidation() override;
   const PictureLayerTiling* GetPendingOrActiveTwinTiling(
       const PictureLayerTiling* tiling) const override;
   PictureLayerTiling* GetRecycledTwinTiling(
       const PictureLayerTiling* tiling) override;
   WhichTree GetTree() const override;
 
   void set_twin_tiling(PictureLayerTiling* tiling) { twin_tiling_ = tiling; }
   void set_recycled_twin_tiling(PictureLayerTiling* tiling) {
     recycled_twin_tiling_ = tiling;
   }
   void set_text_rect(const gfx::Rect& rect) { text_rect_ = rect; }
   void set_allow_create_tile(bool allow) { allow_create_tile_ = allow; }
   void set_invalidation(const Region& region) { invalidation_ = region; }
+  void set_max_tile_priority_bin(TilePriority::PriorityBin bin) {
+    max_tile_priority_bin_ = bin;
+  }
   void set_max_tiles_for_interest_area(size_t area) {
     max_tiles_for_interest_area_ = area;
   }
   void set_skewport_target_time_in_seconds(float time) {
     skewport_target_time_in_seconds_ = time;
   }
   void set_skewport_extrapolation_limit_in_content_pixels(int limit) {
     skewport_extrapolation_limit_in_content_pixels_ = limit;
   }
   void set_tree(WhichTree tree) { tree_ = tree; }
 
   TileManager* tile_manager() const {
     return tile_manager_.get();
   }
 
  protected:
   FakeTileManagerClient tile_manager_client_;
   scoped_ptr<ResourcePool> resource_pool_;
   scoped_ptr<TileManager> tile_manager_;
   scoped_refptr<PicturePileImpl> pile_;
   gfx::Size tile_size_;
   PictureLayerTiling* twin_tiling_;
   PictureLayerTiling* recycled_twin_tiling_;
   gfx::Rect text_rect_;
   bool allow_create_tile_;
   Region invalidation_;
+  TilePriority::PriorityBin max_tile_priority_bin_;
   size_t max_tiles_for_interest_area_;
   float skewport_target_time_in_seconds_;
   int skewport_extrapolation_limit_in_content_pixels_;
   WhichTree tree_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_