[WIP not ready for review] ServiceWorker Download support.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2f79ac027a3144ba9006282e9f8b529ea2d58d43..a957f2ceca47ed02b4d21e8ce25dc6cb1360943f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -3223,9 +3223,18 @@ void RenderFrameImpl::loadURLExternally(const blink::WebURLRequest& request,
                                         bool should_replace_current_entry) {
   Referrer referrer(RenderViewImpl::GetReferrerFromRequest(frame_, request));
   if (policy == blink::WebNavigationPolicyDownload) {
-    Send(new FrameHostMsg_DownloadUrl(render_view_->GetRoutingID(),
-                                      GetRoutingID(), request.url(), referrer,
-                                      suggested_name));
+    ServiceWorkerNetworkProvider* provider =
+        ServiceWorkerNetworkProvider::FromDocumentState(
+            DocumentState::FromDataSource(frame_->dataSource()));
+    DCHECK(provider);
+    FrameHostMsg_DownloadUrl_Params params;
+    params.render_view_id = render_view_->GetRoutingID();
+    params.render_frame_id = GetRoutingID();
+    params.service_worker_provider_id = provider->provider_id();
+    params.url = request.url();
+    params.referrer = referrer;
+    params.suggested_name = suggested_name;
+    Send(new FrameHostMsg_DownloadUrl(params));
   } else {
     OpenURL(request.url(), IsHttpPost(request),
             GetRequestBodyForWebURLRequest(request),