Update from https://crrev.com/308996

cc/resources/picture_layer_tiling_set.cc

Index: cc/resources/picture_layer_tiling_set.cc
diff --git a/cc/resources/picture_layer_tiling_set.cc b/cc/resources/picture_layer_tiling_set.cc
index a3348bc72d350f608c21555cef7a60ed9da5c727..8a8dba3083c736127eb3062305210584c2d50e6b 100644
--- a/cc/resources/picture_layer_tiling_set.cc
+++ b/cc/resources/picture_layer_tiling_set.cc
@@ -56,11 +56,12 @@ PictureLayerTilingSet::~PictureLayerTilingSet() {
 void PictureLayerTilingSet::UpdateTilingsToCurrentRasterSource(
     RasterSource* raster_source,
     const PictureLayerTilingSet* twin_set,
-    const gfx::Size& layer_bounds,
     const Region& layer_invalidation,
     float minimum_contents_scale) {
   RemoveTilingsBelowScale(minimum_contents_scale);
 
+  gfx::Size layer_bounds = raster_source->GetSize();
+
   // Copy over tilings that are shared with the |twin_set| tiling set (if it
   // exists).
   if (twin_set) {