Split image decode cache limits into "working set" vs "cache" limits

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 25 matching lines @@
 
 FakeTileManager::FakeTileManager(TileManagerClient* client,
                                  ResourcePool* resource_pool)
     : TileManager(client,
                   base::ThreadTaskRunnerHandle::Get().get(),
                   nullptr,
                   std::numeric_limits<size_t>::max(),
                   TileManagerSettings()),
       image_decode_cache_(
           ResourceFormat::RGBA_8888,
-          LayerTreeSettings().software_decoded_image_budget_bytes) {
+          LayerTreeSettings().decoded_image_working_set_budget_bytes) {
   SetDecodedImageTracker(&decoded_image_tracker_);
   SetResources(resource_pool, &image_decode_cache_, GetGlobalTaskGraphRunner(),
                GetGlobalRasterBufferProvider(),
                std::numeric_limits<size_t>::max(),
                false /* use_gpu_rasterization */);
   SetTileTaskManagerForTesting(base::MakeUnique<FakeTileTaskManagerImpl>());
 }
 
 FakeTileManager::~FakeTileManager() {}
 
 bool FakeTileManager::HasBeenAssignedMemory(Tile* tile) {
   return std::find(tiles_for_raster.begin(),
                    tiles_for_raster.end(),
                    tile) != tiles_for_raster.end();
 }
 
 }  // namespace cc