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

cc/test/fake_tile_manager.cc

 // Copyright 2012 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/test/fake_tile_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
@@ skipping 14 matching lines @@
 
 base::LazyInstance<FakeRasterBufferProviderImpl> g_fake_raster_buffer_provider =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 FakeTileManager::FakeTileManager(TileManagerClient* client)
     : TileManager(client,
                   base::ThreadTaskRunnerHandle::Get().get(),
                   std::numeric_limits<size_t>::max(),
-                  false /* use_partial_raster */,
-                  LayerTreeSettings().max_preraster_distance_in_screen_pixels),
+                  false /* use_partial_raster */),
       image_decode_controller_(
           ResourceFormat::RGBA_8888,
           LayerTreeSettings().software_decoded_image_budget_bytes) {
   SetResources(
       nullptr, &image_decode_controller_, g_fake_tile_task_manager.Pointer(),
       g_fake_raster_buffer_provider.Pointer(),
       std::numeric_limits<size_t>::max(), false /* use_gpu_rasterization */);
 }
 
 FakeTileManager::FakeTileManager(TileManagerClient* client,
                                  ResourcePool* resource_pool)
     : TileManager(client,
                   base::ThreadTaskRunnerHandle::Get().get(),
                   std::numeric_limits<size_t>::max(),
-                  false /* use_partial_raster */,
-                  LayerTreeSettings().max_preraster_distance_in_screen_pixels),
+                  false /* use_partial_raster */),
       image_decode_controller_(
           ResourceFormat::RGBA_8888,
           LayerTreeSettings().software_decoded_image_budget_bytes) {
   SetResources(resource_pool, &image_decode_controller_,
                g_fake_tile_task_manager.Pointer(),
                g_fake_raster_buffer_provider.Pointer(),
                std::numeric_limits<size_t>::max(),
                false /* use_gpu_rasterization */);
 }
 
 FakeTileManager::~FakeTileManager() {}
 
 bool FakeTileManager::HasBeenAssignedMemory(Tile* tile) {
   return std::find(tiles_for_raster.begin(),
                    tiles_for_raster.end(),
                    tile) != tiles_for_raster.end();
 }
 
 void FakeTileManager::Release(Tile* tile) {
   TileManager::Release(tile);
 
   FreeResourcesForReleasedTiles();
   CleanUpReleasedTiles();
 }
 
 }  // namespace cc