Respect QuicAllowed policy for new streams

chrome/browser/safe_browsing/safe_browsing_service.h

Index: chrome/browser/safe_browsing/safe_browsing_service.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.h b/chrome/browser/safe_browsing/safe_browsing_service.h
index d036c6c060be2087cbc7c06da9b54aa714352407..5f0e9d720944cf39efbee35dced81791cb08a4f4 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -20,6 +20,7 @@
 #include "components/safe_browsing/base_safe_browsing_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "net/http/http_network_session.h"
 
 #if defined(FULL_SAFE_BROWSING)
 #include "chrome/browser/safe_browsing/incident_reporting/delayed_analysis_callback.h"
@@ -112,6 +113,10 @@ class SafeBrowsingService : public BaseSafeBrowsingService,
 
   scoped_refptr<net::URLRequestContextGetter> url_request_context() override;
 
+  // Called on IO thread thread when net parameters change (e.g. due to policy).
+  void UpdateNetParamsOnIOThread(
+      net::HttpNetworkSession::ParamsUpdate params_update);
+
   const scoped_refptr<SafeBrowsingUIManager>& ui_manager() const;
 
   // This returns either the v3 or the v4 database manager, depending on