Update from https://crrev.com/305340

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 14c1defd0eba1faa3c536a5dcfc1959e9d257bfa..e79242752c41e467fc4a7c662de819c70a7ea4b8 100644
--- a/cc/trees/layer_tree_settings.cc
+++ b/cc/trees/layer_tree_settings.cc
@@ -14,9 +14,6 @@ namespace cc {
 
 LayerTreeSettings::LayerTreeSettings()
     : impl_side_painting(false),
-      allow_antialiasing(true),
-      force_antialiasing(false),
-      force_blending_with_shaders(false),
       throttle_frame_production(true),
       single_thread_proxy_scheduler(true),
       use_external_begin_frame_source(false),
@@ -26,11 +23,9 @@ LayerTreeSettings::LayerTreeSettings()
       disable_hi_res_timer_tasks_on_battery(false),
       report_overscroll_only_for_scrollable_axes(false),
       per_tile_painting_enabled(false),
-      partial_swap_enabled(false),
       accelerated_animation_enabled(true),
       can_use_lcd_text(true),
       use_distance_field_text(false),
-      should_clear_root_render_pass(true),
       gpu_rasterization_enabled(false),
       gpu_rasterization_forced(false),
       create_low_res_tiling(false),
@@ -49,7 +44,6 @@ LayerTreeSettings::LayerTreeSettings()
       top_controls_height(0.f),
       top_controls_show_threshold(0.5f),
       top_controls_hide_threshold(0.5f),
-      refresh_rate(60.0),
       background_animation_rate(1.0),
       max_partial_texture_updates(std::numeric_limits<size_t>::max()),
       default_tile_size(gfx::Size(256, 256)),
@@ -64,13 +58,10 @@ LayerTreeSettings::LayerTreeSettings()
       skewport_extrapolation_limit_in_content_pixels(2000),
       max_unused_resource_memory_percentage(100),
       max_memory_for_prepaint_percentage(100),
-      highp_threshold_min(0),
       strict_layer_property_change_checking(false),
       use_one_copy(false),
       use_zero_copy(false),
       ignore_root_layer_flings(false),
-      use_rgba_4444_textures(false),
-      texture_id_allocation_chunk_size(64),
       scheduled_raster_task_limit(32),
       use_occlusion_for_tile_prioritization(false),
       record_full_layer(false) {