Implement ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload().

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index d9d08837604403d2782db63eee0e53d20a7a2c5d..3fb185fad4391f78bae668c7f523d1862b9eaa57 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -1156,7 +1156,9 @@ void RenderProcessHostImpl::CreateMessageFilters() {
 
   scoped_refptr<ServiceWorkerDispatcherHost> service_worker_filter =
       new ServiceWorkerDispatcherHost(
-          GetID(), message_port_message_filter_.get(), resource_context);
+          GetID(), message_port_message_filter_.get(), resource_context,
+          base::Bind(&RenderProcessHostImpl::CreateURLLoaderFactory,
+                     weak_factory_.GetWeakPtr()));
   service_worker_filter->Init(
       storage_partition_impl_->GetServiceWorkerContext());
   AddFilter(service_worker_filter.get());
@@ -3008,4 +3010,15 @@ void RenderProcessHostImpl::OnMojoError(int render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
+// static
+bool RenderProcessHostImpl::CreateURLLoaderFactory(
+    base::WeakPtr<RenderProcessHostImpl> weak_host,
+    mojo::InterfaceRequest<mojom::URLLoaderFactory> request) {

[sadrul, 2016/10/19 14:42:43]

This doesn't need to be a static, right?

[horo, 2016/10/19 14:48:41]

I want to return false if RenderProcessHostImpl was deleted.
So I think this method must be static.

[sadrul, 2016/10/19 15:13:31]

I think the return type can be void, and you can check if the callback has been
canceled (using base::Callback::IsCanceled()) instead.

[horo, 2016/10/19 16:08:02]

Ah, sounds good.
Done.

+  if (!weak_host)
+    return false;
+  URLLoaderFactoryImpl::Create(weak_host->resource_message_filter_,
+                               std::move(request));
+  return true;
+}
+
 }  // namespace content