cc: Restore the space of interest area padding to be ideal contents space.

cc/tiles/picture_layer_tiling_set.cc

Index: cc/tiles/picture_layer_tiling_set.cc
diff --git a/cc/tiles/picture_layer_tiling_set.cc b/cc/tiles/picture_layer_tiling_set.cc
index b4e942a23af8b76b5a673adc1ead2260c5b8c2ac..469080f8d85cee8faab7c48b4f5f130936744453 100644
--- a/cc/tiles/picture_layer_tiling_set.cc
+++ b/cc/tiles/picture_layer_tiling_set.cc
@@ -474,8 +474,9 @@ void PictureLayerTilingSet::UpdatePriorityRects(
   // We keep things as floats in here.
   if (!visible_rect_in_layer_space.IsEmpty()) {
     gfx::RectF eventually_rectf(visible_rect_in_layer_space);
-    eventually_rectf.Inset(-tiling_interest_area_padding_,
-                           -tiling_interest_area_padding_);
+    eventually_rectf.Inset(
+        -tiling_interest_area_padding_ / ideal_contents_scale,
+        -tiling_interest_area_padding_ / ideal_contents_scale);
     if (eventually_rectf.Intersects(
             gfx::RectF(gfx::SizeF(raster_source_->GetSize())))) {
       visible_rect_in_layer_space_ = visible_rect_in_layer_space;