Implement updateViaCache flag and no-cache by default for main service worker scripts

content/public/test/mock_service_worker_context.h

Index: content/public/test/mock_service_worker_context.h
diff --git a/content/public/test/mock_service_worker_context.h b/content/public/test/mock_service_worker_context.h
index 90c8cbe2411d91ecde05129ad1c90ab75385dda2..6300148207cf45c89deb178ecd7d9532a1a96424 100644
--- a/content/public/test/mock_service_worker_context.h
+++ b/content/public/test/mock_service_worker_context.h
@@ -23,9 +23,10 @@ class MockServiceWorkerContext : public ServiceWorkerContext {
 
   MOCK_METHOD1(AddObserver, void(ServiceWorkerContextObserver*));
   MOCK_METHOD1(RemoveObserver, void(ServiceWorkerContextObserver*));
-  MOCK_METHOD3(RegisterServiceWorker,
+  MOCK_METHOD4(RegisterServiceWorker,
                void(const ServiceWorkerContext::Scope&,
                     const GURL&,
+                    const blink::WebServiceWorkerUpdateViaCache,
                     const ServiceWorkerContext::ResultCallback&));
   MOCK_METHOD2(StartingExternalRequest, bool(int64_t, const std::string&));
   MOCK_METHOD2(FinishedExternalRequest, bool(int64_t, const std::string&));