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

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index d9f1a22aefd1c60effdaa1f527280a69a8ceda65..dca48aa091d89ac76390d1761f27ffdbb74303a8 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2174,11 +2174,12 @@ void LayerTreeHostImpl::CreateTileManagerResources() {
     image_decode_cache_ = base::MakeUnique<GpuImageDecodeCache>(
         compositor_frame_sink_->worker_context_provider(),
         settings_.renderer_settings.preferred_tile_format,
-        settings_.gpu_decoded_image_budget_bytes);
+        settings_.decoded_image_working_set_budget_bytes,
+        settings_.decoded_image_cache_budget_bytes);
   } else {
     image_decode_cache_ = base::MakeUnique<SoftwareImageDecodeCache>(
         settings_.renderer_settings.preferred_tile_format,
-        settings_.software_decoded_image_budget_bytes);
+        settings_.decoded_image_working_set_budget_bytes);
   }
 
   // Pass the single-threaded synchronous task graph runner to the worker pool