cc: Remove all traces of synchronous GPU rasterization

cc/trees/layer_tree_settings.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_settings.h"
 
 #include <GLES2/gl2.h>
 #include <limits>
 
 #include "base/command_line.h"
@@ skipping 11 matching lines @@
       main_frame_before_activation_enabled(false),
       using_synchronous_renderer_compositor(false),
       report_overscroll_only_for_scrollable_axes(false),
       per_tile_painting_enabled(false),
       accelerated_animation_enabled(true),
       can_use_lcd_text(true),
       use_distance_field_text(false),
       gpu_rasterization_enabled(false),
       gpu_rasterization_forced(false),
       gpu_rasterization_msaa_sample_count(0),
-      gpu_rasterization_skewport_target_time_in_seconds(0.0f),
-      threaded_gpu_rasterization_enabled(false),
+      gpu_rasterization_skewport_target_time_in_seconds(0.2f),
       create_low_res_tiling(false),
       scrollbar_animator(NO_ANIMATOR),
       scrollbar_fade_delay_ms(0),
       scrollbar_fade_resize_delay_ms(0),
       scrollbar_fade_duration_ms(0),
       scrollbar_show_scale_threshold(1.0f),
       solid_color_scrollbar_color(SK_ColorWHITE),
       timeout_and_draw_when_animation_checkerboards(true),
       maximum_number_of_failed_draws_before_draw_is_forced_(3),
       layer_transforms_should_scale_layer_contents(false),
@@ skipping 47 matching lines @@
   scheduler_settings.using_synchronous_renderer_compositor =
       using_synchronous_renderer_compositor;
   scheduler_settings.throttle_frame_production = throttle_frame_production;
   scheduler_settings.main_thread_should_always_be_low_latency = false;
   scheduler_settings.background_frame_interval =
       base::TimeDelta::FromSecondsD(1.0 / background_animation_rate);
   return scheduler_settings;
 }
 
 }  // namespace cc