Convert scroll offsets to use SyncedProperty.

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 21 matching lines @@
  public:
   struct CC_EXPORT Pair {
     Pair();
     Pair(PictureLayerImpl* active_layer, PictureLayerImpl* pending_layer);
     ~Pair();
 
     PictureLayerImpl* active;
     PictureLayerImpl* pending;
   };
 
-  static scoped_ptr<PictureLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                             int id,
-                                             bool is_mask) {
-    return make_scoped_ptr(new PictureLayerImpl(tree_impl, id, is_mask));
+  static scoped_ptr<PictureLayerImpl> Create(
+      LayerTreeImpl* tree_impl,
+      int id,
+      bool is_mask,
+      scoped_refptr<SyncedScrollOffset> scroll_offset) {
+    return make_scoped_ptr(
+        new PictureLayerImpl(tree_impl, id, is_mask, scroll_offset));
   }
   ~PictureLayerImpl() override;
 
   bool is_mask() const { return is_mask_; }
 
   scoped_ptr<TilingSetEvictionQueue> CreateEvictionQueue(
       TreePriority tree_priority);
   scoped_ptr<TilingSetRasterQueue> CreateRasterQueue(bool prioritize_low_res);
 
   // LayerImpl overrides.
@@ skipping 47 matching lines @@
   bool AllTilesRequiredForActivationAreReadyToDraw() const;
   bool AllTilesRequiredForDrawAreReadyToDraw() const;
 
   // Used for benchmarking
   RasterSource* GetRasterSource() const { return raster_source_.get(); }
 
  protected:
   friend class LayerRasterTileIterator;
   using TileRequirementCheck = bool (PictureLayerTiling::*)(const Tile*) const;
 
-  PictureLayerImpl(LayerTreeImpl* tree_impl, int id, bool is_mask);
+  PictureLayerImpl(LayerTreeImpl* tree_impl,
+                   int id,
+                   bool is_mask,
+                   scoped_refptr<SyncedScrollOffset> scroll_offset);
   PictureLayerTiling* AddTiling(float contents_scale);
   void RemoveAllTilings();
   void AddTilingsForRasterScale();
   bool UpdateTilePriorities(const Occlusion& occlusion_in_content_space);
   virtual bool ShouldAdjustRasterScale() const;
   virtual void RecalculateRasterScales();
   void CleanUpTilingsOnActiveLayer(
       std::vector<PictureLayerTiling*> used_tilings);
   float MinimumContentsScale() const;
   float MaximumContentsScale() const;
@@ skipping 52 matching lines @@
   // from regular draws. Save a copy of the required draw properties of the last
   // frame that has a valid viewport for prioritizing tiles.
   gfx::Rect visible_rect_for_tile_priority_;
 
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_