cc: Give TilingData a Rect instead of a Size

cc/resources/tile_manager.cc

Index: cc/resources/tile_manager.cc
diff --git a/cc/resources/tile_manager.cc b/cc/resources/tile_manager.cc
index 963808e20a5cf633c7e710bb46d7e827682af31f..026fb8d750aed881add7611fc7a85b715cf6a522 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -1138,7 +1138,7 @@ scoped_refptr<RasterTask> TileManager::CreateRasterTask(Tile* tile) {
   // Note that this last optimization is a heuristic that ensures that we don't
   // spend too much time analyzing tiles on a multitude of small layers, as it
   // is likely that these layers have some non-solid content.
-  gfx::Size pile_size = tile->picture_pile()->size();
+  gfx::Size pile_size = tile->picture_pile()->tiling_rect().size();
   bool analyze_picture = !tile->use_gpu_rasterization() &&
                          std::min(pile_size.width(), pile_size.height()) >=
                              kMinDimensionsForAnalysis;