cc: Change preraster/predecode split to be half of max skewport extent.

cc/tiles/tile_manager_unittest.cc

 // Copyright 2013 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 1079 matching lines @@
 
   client.SetTileSize(gfx::Size(30, 30));
   LayerTreeSettings settings;
   settings.verify_clip_tree_calculations = true;
   settings.verify_transform_tree_calculations = true;
 
   std::unique_ptr<PictureLayerTilingSet> tiling_set =
       PictureLayerTilingSet::Create(
           ACTIVE_TREE, &client, settings.tiling_interest_area_padding,
           settings.skewport_target_time_in_seconds,
-          settings.skewport_extrapolation_limit_in_screen_pixels);
+          settings.skewport_extrapolation_limit_in_screen_pixels,
+          settings.max_preraster_distance_in_screen_pixels);
 
   scoped_refptr<FakeRasterSource> raster_source =
       FakeRasterSource::CreateFilled(layer_bounds);
   PictureLayerTiling* tiling = tiling_set->AddTiling(1.0f, raster_source);
   tiling->set_resolution(HIGH_RESOLUTION);
 
   tiling_set->UpdateTilePriorities(viewport, 1.0f, 1.0, Occlusion(), true);
   std::vector<Tile*> all_tiles = tiling->AllTilesForTesting();
   // Sanity check.
   EXPECT_EQ(3364u, all_tiles.size());
@@ skipping 91 matching lines @@
 
   client.SetTileSize(gfx::Size(30, 30));
   LayerTreeSettings settings;
   settings.verify_clip_tree_calculations = true;
   settings.verify_transform_tree_calculations = true;
 
   std::unique_ptr<PictureLayerTilingSet> tiling_set =
       PictureLayerTilingSet::Create(
           ACTIVE_TREE, &client, settings.tiling_interest_area_padding,
           settings.skewport_target_time_in_seconds,
-          settings.skewport_extrapolation_limit_in_screen_pixels);
+          settings.skewport_extrapolation_limit_in_screen_pixels,
+          settings.max_preraster_distance_in_screen_pixels);
 
   scoped_refptr<FakeRasterSource> raster_source =
       FakeRasterSource::CreateFilled(layer_bounds);
   PictureLayerTiling* tiling = tiling_set->AddTiling(1.0f, raster_source);
   tiling->set_resolution(HIGH_RESOLUTION);
 
   tiling_set->UpdateTilePriorities(viewport, 1.0f, 1.0, Occlusion(), true);
   tiling_set->UpdateTilePriorities(moved_viewport, 1.0f, 2.0, Occlusion(),
                                    true);
 
@@ skipping 136 matching lines @@
   gfx::Size layer_bounds(1, 1);
 
   scoped_refptr<FakeRasterSource> raster_source =
       FakeRasterSource::CreateFilled(layer_bounds);
 
   FakePictureLayerTilingClient pending_client;
   pending_client.SetTileSize(gfx::Size(64, 64));
 
   std::unique_ptr<PictureLayerTilingSet> tiling_set =
       PictureLayerTilingSet::Create(WhichTree::ACTIVE_TREE, &pending_client,
-                                    1.0f, 1.0f, 1000);
+                                    1.0f, 1.0f, 1000, 1000.f);
   pending_client.set_twin_tiling_set(tiling_set.get());
 
   auto* tiling = tiling_set->AddTiling(1.0f, raster_source);
 
   tiling->set_resolution(HIGH_RESOLUTION);
   tiling->CreateAllTilesForTesting();
 
   // The tile is (0, 0, 1, 1), create an intersecting and non-intersecting
   // rectangle to test the advance phase with. The tile size is (64, 64), so
   // both rectangles intersect the tile content size, but only one should
@@ skipping 510 matching lines @@
 }
 
 // Ensures that the tile manager does not attempt to reuse tiles when partial
 // raster is disabled.
 TEST_F(TileManagerTest, PartialRasterSuccessfullyDisabled) {
   RunPartialRasterCheck(TakeHostImpl(), false /* partial_raster_enabled */);
 }
 
 }  // namespace
 }  // namespace cc