cc: Change preraster/predecode split to be half of max skewport extent.

cc/layers/picture_layer_impl.cc

Index: cc/layers/picture_layer_impl.cc
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc
index 1a5bb8926b294b4b645a9c67e536d1b0c55e2e0b..cc43519fd7d95df91ba450586b0dab305c978380 100644
--- a/cc/layers/picture_layer_impl.cc
+++ b/cc/layers/picture_layer_impl.cc
@@ -1242,7 +1242,8 @@ PictureLayerImpl::CreatePictureLayerTilingSet() {
       layer_tree_impl()->use_gpu_rasterization()
           ? settings.gpu_rasterization_skewport_target_time_in_seconds
           : settings.skewport_target_time_in_seconds,
-      settings.skewport_extrapolation_limit_in_screen_pixels);
+      settings.skewport_extrapolation_limit_in_screen_pixels,
+      settings.max_preraster_distance_in_screen_pixels);
 }
 
 void PictureLayerImpl::UpdateIdealScales() {