cc: Move SyncedScrollOffset to scroll tree

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 <stddef.h>
 
 #include <map>
@@ skipping 12 matching lines @@
 namespace cc {
 
 struct AppendQuadsData;
 class MicroBenchmarkImpl;
 class Tile;
 
 class CC_EXPORT PictureLayerImpl
     : public LayerImpl,
       NON_EXPORTED_BASE(public PictureLayerTilingClient) {
  public:
-  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));
+  static scoped_ptr<PictureLayerImpl> Create(LayerTreeImpl* tree_impl,
+                                             int id,
+                                             bool is_mask) {
+    return make_scoped_ptr(new PictureLayerImpl(tree_impl, id, is_mask));
   }
   ~PictureLayerImpl() override;
 
   bool is_mask() const { return is_mask_; }
 
   // LayerImpl overrides.
   const char* LayerTypeAsString() const override;
   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   void PushPropertiesTo(LayerImpl* layer) override;
   void AppendQuads(RenderPass* render_pass,
@@ skipping 46 matching lines @@
 
   // Used for benchmarking
   DisplayListRasterSource* 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,
-                   scoped_refptr<SyncedScrollOffset> scroll_offset);
+  PictureLayerImpl(LayerTreeImpl* tree_impl, int id, bool is_mask);
   PictureLayerTiling* AddTiling(float contents_scale);
   void RemoveAllTilings();
   void AddTilingsForRasterScale();
   void AddLowResolutionTilingIfNeeded();
   virtual bool ShouldAdjustRasterScale() const;
   virtual void RecalculateRasterScales();
   void CleanUpTilingsOnActiveLayer(
       const std::vector<PictureLayerTiling*>& used_tilings);
   float MinimumContentsScale() const;
   float MaximumContentsScale() const;
@@ skipping 48 matching lines @@
   // of comparing pointers, since objects pointed to are not guaranteed to
   // exist.
   std::vector<PictureLayerTiling*> last_append_quads_tilings_;
 
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_