Convert scroll offsets to use SyncedProperty.

cc/test/fake_picture_layer_impl.h

 // Copyright 2013 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_IMPL_H_
 #define CC_TEST_FAKE_PICTURE_LAYER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/layers/picture_layer_impl.h"
 
@@ skipping 131 matching lines @@
   FakePictureLayerImpl(LayerTreeImpl* tree_impl,
                        int id,
                        scoped_refptr<RasterSource> raster_source,
                        bool is_mask);
   FakePictureLayerImpl(LayerTreeImpl* tree_impl,
                        int id,
                        scoped_refptr<RasterSource> raster_source,
                        bool is_mask,
                        const gfx::Size& layer_bounds);
   FakePictureLayerImpl(LayerTreeImpl* tree_impl, int id, bool is_mask);
+  FakePictureLayerImpl(
+      LayerTreeImpl* tree_impl,
+      int id,
+      bool is_mask,
+      scoped_refptr<LayerImpl::SyncedScrollOffset> synced_scroll_offset);
 
  private:
   gfx::Size fixed_tile_size_;
 
   size_t append_quads_count_;
   size_t did_become_active_call_count_;
   bool has_valid_tile_priorities_;
   bool use_set_valid_tile_priorities_flag_;
   size_t release_resources_count_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_PICTURE_LAYER_IMPL_H_