Remove parts of //cc we aren't using

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"
-#include "base/logging.h"
-#include "base/strings/string_number_conversions.h"
-
-namespace cc {
-
-LayerTreeSettings::LayerTreeSettings()
-    : impl_side_painting(false),
-      raster_enabled(true),
-      throttle_frame_production(true),
-      single_thread_proxy_scheduler(true),
-      use_external_begin_frame_source(false),
-      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),
-      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),
-      layers_always_allowed_lcd_text(false),
-      minimum_contents_scale(0.0625f),
-      low_res_contents_scale_factor(0.25f),
-      top_controls_show_threshold(0.5f),
-      top_controls_hide_threshold(0.5f),
-      background_animation_rate(1.0),
-      max_partial_texture_updates(std::numeric_limits<size_t>::max()),
-      default_tile_size(gfx::Size(256, 256)),
-      max_untiled_layer_size(gfx::Size(512, 512)),
-      default_tile_grid_size(gfx::Size(256, 256)),
-      minimum_occlusion_tracking_size(gfx::Size(160, 160)),
-      use_pinch_zoom_scrollbars(false),
-      use_pinch_virtual_viewport(false),
-      // At 256x256 tiles, 128 tiles cover an area of 2048x4096 pixels.
-      max_tiles_for_interest_area(128),
-      skewport_target_time_in_seconds(1.0f),
-      skewport_extrapolation_limit_in_content_pixels(2000),
-      max_unused_resource_memory_percentage(100),
-      max_memory_for_prepaint_percentage(100),
-      strict_layer_property_change_checking(false),
-      use_one_copy(false),
-      use_zero_copy(false),
-      enable_elastic_overscroll(false),
-      use_image_texture_target(GL_TEXTURE_2D),
-      ignore_root_layer_flings(false),
-      scheduled_raster_task_limit(32),
-      use_occlusion_for_tile_prioritization(false),
-      record_full_layer(false),
-      use_display_lists(false),
-      verify_property_trees(false),
-      gather_pixel_refs(false) {
-}
-
-LayerTreeSettings::~LayerTreeSettings() {}
-
-SchedulerSettings LayerTreeSettings::ToSchedulerSettings() const {
-  SchedulerSettings scheduler_settings;
-  scheduler_settings.use_external_begin_frame_source =
-      use_external_begin_frame_source;
-  scheduler_settings.main_frame_before_activation_enabled =
-      main_frame_before_activation_enabled;
-  scheduler_settings.impl_side_painting = impl_side_painting;
-  scheduler_settings.timeout_and_draw_when_animation_checkerboards =
-      timeout_and_draw_when_animation_checkerboards;
-  scheduler_settings.maximum_number_of_failed_draws_before_draw_is_forced_ =
-      maximum_number_of_failed_draws_before_draw_is_forced_;
-  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