cc: Move prepaint region calculations to the tiling set.

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 <stddef.h>
 #include <limits>
 
@@ skipping 68 matching lines @@
       low_res_contents_scale_factor(0.25f),
       top_controls_show_threshold(0.5f),
       top_controls_hide_threshold(0.5f),
       background_animation_rate(1.0),
       default_tile_size(gfx::Size(256, 256)),
       max_untiled_layer_size(gfx::Size(512, 512)),
       minimum_occlusion_tracking_size(gfx::Size(160, 160)),
       // 3000 pixels should give sufficient area for prepainting.
       tiling_interest_area_padding(3000),
       skewport_target_time_in_seconds(1.0f),
-      skewport_extrapolation_limit_in_content_pixels(2000),
+      skewport_extrapolation_limit_in_screen_pixels(2000),
       max_memory_for_prepaint_percentage(100),
       use_zero_copy(false),
       use_partial_raster(false),
       enable_elastic_overscroll(false),
       use_image_texture_targets(
           static_cast<size_t>(gfx::BufferFormat::LAST) + 1,
           GL_TEXTURE_2D),
       ignore_root_layer_flings(false),
       scheduled_raster_task_limit(32),
       use_occlusion_for_tile_prioritization(false),
@@ skipping 45 matching lines @@
          top_controls_show_threshold == other.top_controls_show_threshold &&
          top_controls_hide_threshold == other.top_controls_hide_threshold &&
          background_animation_rate == other.background_animation_rate &&
          default_tile_size == other.default_tile_size &&
          max_untiled_layer_size == other.max_untiled_layer_size &&
          minimum_occlusion_tracking_size ==
              other.minimum_occlusion_tracking_size &&
          tiling_interest_area_padding == other.tiling_interest_area_padding &&
          skewport_target_time_in_seconds ==
              other.skewport_target_time_in_seconds &&
-         skewport_extrapolation_limit_in_content_pixels ==
-             other.skewport_extrapolation_limit_in_content_pixels &&
+         skewport_extrapolation_limit_in_screen_pixels ==
+             other.skewport_extrapolation_limit_in_screen_pixels &&
          max_memory_for_prepaint_percentage ==
              other.max_memory_for_prepaint_percentage &&
          use_zero_copy == other.use_zero_copy &&
          use_partial_raster == other.use_partial_raster &&
          enable_elastic_overscroll == other.enable_elastic_overscroll &&
          use_image_texture_targets == other.use_image_texture_targets &&
          ignore_root_layer_flings == other.ignore_root_layer_flings &&
          scheduled_raster_task_limit == other.scheduled_raster_task_limit &&
          use_occlusion_for_tile_prioritization ==
              other.use_occlusion_for_tile_prioritization &&
@@ skipping 38 matching lines @@
   proto->set_low_res_contents_scale_factor(low_res_contents_scale_factor);
   proto->set_top_controls_show_threshold(top_controls_show_threshold);
   proto->set_top_controls_hide_threshold(top_controls_hide_threshold);
   proto->set_background_animation_rate(background_animation_rate);
   SizeToProto(default_tile_size, proto->mutable_default_tile_size());
   SizeToProto(max_untiled_layer_size, proto->mutable_max_untiled_layer_size());
   SizeToProto(minimum_occlusion_tracking_size,
               proto->mutable_minimum_occlusion_tracking_size());
   proto->set_tiling_interest_area_padding(tiling_interest_area_padding);
   proto->set_skewport_target_time_in_seconds(skewport_target_time_in_seconds);
-  proto->set_skewport_extrapolation_limit_in_content_pixels(
-      skewport_extrapolation_limit_in_content_pixels);
+  proto->set_skewport_extrapolation_limit_in_screen_pixels(
+      skewport_extrapolation_limit_in_screen_pixels);
   proto->set_max_memory_for_prepaint_percentage(
       max_memory_for_prepaint_percentage);
   proto->set_use_zero_copy(use_zero_copy);
   proto->set_use_partial_raster(use_partial_raster);
   proto->set_enable_elastic_overscroll(enable_elastic_overscroll);
   proto->set_ignore_root_layer_flings(ignore_root_layer_flings);
   proto->set_scheduled_raster_task_limit(scheduled_raster_task_limit);
   proto->set_use_occlusion_for_tile_prioritization(
       use_occlusion_for_tile_prioritization);
   proto->set_image_decode_tasks_enabled(image_decode_tasks_enabled);
@@ skipping 39 matching lines @@
   low_res_contents_scale_factor = proto.low_res_contents_scale_factor();
   top_controls_show_threshold = proto.top_controls_show_threshold();
   top_controls_hide_threshold = proto.top_controls_hide_threshold();
   background_animation_rate = proto.background_animation_rate();
   default_tile_size = ProtoToSize(proto.default_tile_size());
   max_untiled_layer_size = ProtoToSize(proto.max_untiled_layer_size());
   minimum_occlusion_tracking_size =
       ProtoToSize(proto.minimum_occlusion_tracking_size());
   tiling_interest_area_padding = proto.tiling_interest_area_padding();
   skewport_target_time_in_seconds = proto.skewport_target_time_in_seconds();
-  skewport_extrapolation_limit_in_content_pixels =
-      proto.skewport_extrapolation_limit_in_content_pixels();
+  skewport_extrapolation_limit_in_screen_pixels =
+      proto.skewport_extrapolation_limit_in_screen_pixels();
   max_memory_for_prepaint_percentage =
       proto.max_memory_for_prepaint_percentage();
   use_zero_copy = proto.use_zero_copy();
   use_partial_raster = proto.use_partial_raster();
   enable_elastic_overscroll = proto.enable_elastic_overscroll();
   // |use_image_texture_targets| contains default values, so clear first.
   use_image_texture_targets.clear();
   ignore_root_layer_flings = proto.ignore_root_layer_flings();
   scheduled_raster_task_limit = proto.scheduled_raster_task_limit();
   use_occlusion_for_tile_prioritization =
@@ skipping 22 matching lines @@
       using_synchronous_renderer_compositor;
   scheduler_settings.throttle_frame_production = wait_for_beginframe_interval;
   scheduler_settings.background_frame_interval =
       base::TimeDelta::FromSecondsD(1.0 / background_animation_rate);
   scheduler_settings.abort_commit_before_output_surface_creation =
       abort_commit_before_output_surface_creation;
   return scheduler_settings;
 }
 
 }  // namespace cc