Raster PictureLayerTiling with fractional translation

cc/tiles/picture_layer_tiling_set.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_TILES_PICTURE_LAYER_TILING_SET_H_
 #define CC_TILES_PICTURE_LAYER_TILING_SET_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 58 matching lines @@
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation,
       float minimum_contents_scale,
       float maximum_contents_scale);
 
   // This function is called on the sync tree right after commit.
   void UpdateRasterSourceDueToLCDChange(
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation);
 
-  PictureLayerTiling* AddTiling(float contents_scale,
+  PictureLayerTiling* AddTiling(const ScaleTranslate2d& contents_transform,
                                 scoped_refptr<RasterSource> raster_source);
   size_t num_tilings() const { return tilings_.size(); }
   int NumHighResTilings() const;
   PictureLayerTiling* tiling_at(size_t idx) { return tilings_[idx].get(); }
   const PictureLayerTiling* tiling_at(size_t idx) const {
     return tilings_[idx].get();
   }
   WhichTree tree() const { return tree_; }
 
   PictureLayerTiling* FindTilingWithScale(float scale) const;
@@ skipping 17 matching lines @@
 
   // Removes all tilings with a contents scale > |maximum_scale|.
   void RemoveTilingsAboveScale(float maximum_scale);
 
   // Remove all tilings.
   void RemoveAllTilings();
 
   // Remove all tiles; keep all tilings.
   void RemoveAllTiles();
 
+  // Remove one tiling.
+  void Remove(PictureLayerTiling* tiling);
+
   // Update the rects and priorities for tiles based on the given information.
   // Returns true if PrepareTiles is required.
   bool UpdateTilePriorities(const gfx::Rect& required_rect_in_layer_space,
                             float ideal_contents_scale,
                             double current_frame_time_in_seconds,
                             const Occlusion& occlusion_in_layer_space,
                             bool can_require_tiles_for_activation);
 
   void GetAllPrioritizedTilesForTracing(
       std::vector<PrioritizedTile>* prioritized_tiles) const;
@@ skipping 79 matching lines @@
       PictureLayerTilingClient* client,
       int tiling_interest_area_padding,
       float skewport_target_time_in_seconds,
       int skewport_extrapolation_limit_in_screen_pixels);
 
   void CopyTilingsAndPropertiesFromPendingTwin(
       const PictureLayerTilingSet* pending_twin_set,
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation);
 
-  // Remove one tiling.
-  void Remove(PictureLayerTiling* tiling);
   void VerifyTilings(const PictureLayerTilingSet* pending_twin_set) const;
 
   bool TilingsNeedUpdate(const gfx::Rect& required_rect_in_layer_space,
                          double current_frame_time_in_Seconds);
   gfx::Rect ComputeSkewport(const gfx::Rect& visible_rect_in_layer_space,
                             double current_frame_time_in_seconds,
                             float ideal_contents_scale);
   gfx::Rect ComputeSoonBorderRect(const gfx::Rect& visible_rect_in_layer_space,
                                   float ideal_contents_scale);
   void UpdatePriorityRects(const gfx::Rect& visible_rect_in_layer_space,
@@ skipping 21 matching lines @@
 
   friend class Iterator;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingSet);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_PICTURE_LAYER_TILING_SET_H_