Update from https://crrev.com/306655

cc/trees/layer_tree_settings.cc

Index: cc/trees/layer_tree_settings.cc
diff --git a/cc/trees/layer_tree_settings.cc b/cc/trees/layer_tree_settings.cc
index e79242752c41e467fc4a7c662de819c70a7ea4b8..0771eb8b1b1f0267230d92274f92bc05010e9b61 100644
--- a/cc/trees/layer_tree_settings.cc
+++ b/cc/trees/layer_tree_settings.cc
@@ -61,10 +61,13 @@ LayerTreeSettings::LayerTreeSettings()
       strict_layer_property_change_checking(false),
       use_one_copy(false),
       use_zero_copy(false),
+      use_image_external(false),
       ignore_root_layer_flings(false),
       scheduled_raster_task_limit(32),
       use_occlusion_for_tile_prioritization(false),
-      record_full_layer(false) {
+      record_full_layer(false),
+      use_display_lists(false),
+      main_thread_should_always_be_low_latency(false) {
 }
 
 LayerTreeSettings::~LayerTreeSettings() {}