[WIP] off-main-thread loading

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 e81549904d51444addc50ade41cdd243ea246acc..7568d2564c0aa2c9ccb4b325e6ba37660f717911 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -6811,6 +6811,25 @@ blink::WebPageVisibilityState RenderFrameImpl::GetVisibilityState() const {
   return visibilityState();
 }
 
+void RenderFrameImpl::propagateAuxiliaryFetchContext(
+    blink::WebWorkerFetchContextInfo* webWorkerFetchContextInfo) const {
+  webWorkerFetchContextInfo->setParentFrameID(routing_id_);
+  webWorkerFetchContextInfo->setIsSecureContext(
+      frame_->document().isSecureContext());
+
+  blink::WebServiceWorkerNetworkProvider* webProvider =
+      frame_->dataSource()->getServiceWorkerNetworkProvider();
+  if (webProvider) {
+    ServiceWorkerNetworkProvider* provider =
+        ServiceWorkerNetworkProvider::FromWebServiceWorkerNetworkProvider(
+            webProvider);
+    webWorkerFetchContextInfo->setServiceWorkerProviderID(
+        provider->provider_id());
+    webWorkerFetchContextInfo->setIsControlledByServiceWorker(
+        provider->IsControlledByServiceWorker());
+  }
+}
+
 bool RenderFrameImpl::IsBrowserSideNavigationPending() {
   return browser_side_navigation_pending_;
 }