cc: Inflate invalidation in each picture list

cc/resources/picture_layer_tiling.cc

Index: cc/resources/picture_layer_tiling.cc
diff --git a/cc/resources/picture_layer_tiling.cc b/cc/resources/picture_layer_tiling.cc
index 85249e2598351219a16106c914e714bd8d7af513..678a0fad11ffb764da09d720202ccdb97326badd 100644
--- a/cc/resources/picture_layer_tiling.cc
+++ b/cc/resources/picture_layer_tiling.cc
@@ -42,6 +42,12 @@ PictureLayerTiling::PictureLayerTiling(float contents_scale,
       gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale));
   gfx::Size tile_size = client_->CalculateTileSize(content_bounds);
 
+  DCHECK(!gfx::ToFlooredSize(
+      gfx::ScaleSize(layer_bounds, contents_scale)).IsEmpty()) <<
+      "Tiling created with scale too small as contents become empty. " <<
+      "Layer bounds: " << layer_bounds.ToString() <<
+      "Contents scale: " << contents_scale;
+
   tiling_data_.SetTotalSize(content_bounds);
   tiling_data_.SetMaxTextureSize(tile_size);
 }