cc: Move SyncedScrollOffset to scroll tree

cc/test/fake_picture_layer_impl.cc

Index: cc/test/fake_picture_layer_impl.cc
diff --git a/cc/test/fake_picture_layer_impl.cc b/cc/test/fake_picture_layer_impl.cc
index 225ee64baeeddb717e581a6270aa2f5737136fcb..53209e29e611125f88243d969a8a9cf74f0a6462 100644
--- a/cc/test/fake_picture_layer_impl.cc
+++ b/cc/test/fake_picture_layer_impl.cc
@@ -17,10 +17,7 @@ FakePictureLayerImpl::FakePictureLayerImpl(
     int id,
     scoped_refptr<DisplayListRasterSource> raster_source,
     bool is_mask)
-    : PictureLayerImpl(tree_impl,
-                       id,
-                       is_mask,
-                       new LayerImpl::SyncedScrollOffset),
+    : PictureLayerImpl(tree_impl, id, is_mask, new SyncedScrollOffset),
       append_quads_count_(0),
       did_become_active_call_count_(0),
       has_valid_tile_priorities_(false),
@@ -36,10 +33,7 @@ FakePictureLayerImpl::FakePictureLayerImpl(
     scoped_refptr<DisplayListRasterSource> raster_source,
     bool is_mask,
     const gfx::Size& layer_bounds)
-    : PictureLayerImpl(tree_impl,
-                       id,
-                       is_mask,
-                       new LayerImpl::SyncedScrollOffset),
+    : PictureLayerImpl(tree_impl, id, is_mask, new SyncedScrollOffset),
       append_quads_count_(0),
       did_become_active_call_count_(0),
       has_valid_tile_priorities_(false),
@@ -52,24 +46,19 @@ FakePictureLayerImpl::FakePictureLayerImpl(
 FakePictureLayerImpl::FakePictureLayerImpl(LayerTreeImpl* tree_impl,
                                            int id,
                                            bool is_mask)
-    : FakePictureLayerImpl(tree_impl,
-                           id,
-                           is_mask,
-                           new LayerImpl::SyncedScrollOffset) {
-}
+    : FakePictureLayerImpl(tree_impl, id, is_mask, new SyncedScrollOffset) {}
 
 FakePictureLayerImpl::FakePictureLayerImpl(
     LayerTreeImpl* tree_impl,
     int id,
     bool is_mask,
-    scoped_refptr<LayerImpl::SyncedScrollOffset> synced_scroll_offset)
+    scoped_refptr<SyncedScrollOffset> synced_scroll_offset)
     : PictureLayerImpl(tree_impl, id, is_mask, synced_scroll_offset),
       append_quads_count_(0),
       did_become_active_call_count_(0),
       has_valid_tile_priorities_(false),
       use_set_valid_tile_priorities_flag_(false),
-      release_resources_count_(0) {
-}
+      release_resources_count_(0) {}
 
 scoped_ptr<LayerImpl> FakePictureLayerImpl::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {