cc: Don't swap PictureLayerTilingSet on activate.

cc/layers/picture_layer_impl.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_LAYERS_PICTURE_LAYER_IMPL_H_
 #define CC_LAYERS_PICTURE_LAYER_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 95 matching lines @@
   int GetSkewportExtrapolationLimitInContentPixels() const override;
   WhichTree GetTree() const override;
   bool RequiresHighResToDraw() const override;
 
   // PushPropertiesTo active tree => pending tree.
   void SyncTiling(const PictureLayerTiling* tiling);
 
   // Mask-related functions.
   void GetContentsResourceId(ResourceProvider::ResourceId* resource_id,
                              gfx::Size* resource_size) const override;
-  void set_is_mask(bool is_mask) { is_mask_ = is_mask; }
 
   size_t GPUMemoryUsageInBytes() const override;
 
   void RunMicroBenchmark(MicroBenchmarkImpl* benchmark) override;
 
   bool CanHaveTilings() const;
 
   // Functions used by tile manager.
   PictureLayerImpl* GetPendingOrActiveTwinLayer() const;
   bool IsOnActiveOrPendingTree() const;
   // Virtual for testing.
   virtual bool HasValidTilePriorities() const;
   bool AllTilesRequiredForActivationAreReadyToDraw() const;
   bool AllTilesRequiredForDrawAreReadyToDraw() const;
 
   // Used for benchmarking
   const RasterSource* GetRasterSource() const { return raster_source_.get(); }
 
  protected:
   friend class LayerRasterTileIterator;
   using TileRequirementCheck = bool (PictureLayerTiling::*)(const Tile*) const;
 
   PictureLayerImpl(LayerTreeImpl* tree_impl, int id);
   PictureLayerTiling* AddTiling(float contents_scale);
   void RemoveAllTilings();
-  void SyncFromActiveLayer(const PictureLayerImpl* other);
   void AddTilingsForRasterScale();
   void UpdateTilePriorities(const Occlusion& occlusion_in_content_space);
   virtual bool ShouldAdjustRasterScale() const;
   virtual void RecalculateRasterScales();
   void CleanUpTilingsOnActiveLayer(
       std::vector<PictureLayerTiling*> used_tilings);
   float MinimumContentsScale() const;
   void ResetRasterScale();
   gfx::Rect GetViewportForTilePriorityInContentSpace() const;
   PictureLayerImpl* GetRecycledTwinLayer() const;
-  void UpdateRasterSource(scoped_refptr<RasterSource> raster_source);
+  // TODO(danakj): Make |is_mask| a constructor parameter (for PictureLayer too)
+  // and immutable.
+  void UpdateRasterSource(scoped_refptr<RasterSource> raster_source,
+                          Region* new_invalidation,
+                          bool is_mask,
+                          const PictureLayerTilingSet* pending_set);
 
   void DoPostCommitInitializationIfNeeded() {
     if (needs_post_commit_initialization_)
       DoPostCommitInitialization();
   }
   void DoPostCommitInitialization();
 
   bool CanHaveTilingWithScale(float contents_scale) const;
   void SanityCheckTilingState() const;
   // Checks if all tiles required for a certain action (e.g. activation) are
@@ skipping 45 matching lines @@
   // frame that has a valid viewport for prioritizing tiles.
   gfx::Rect visible_rect_for_tile_priority_;
 
   friend class PictureLayer;
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_