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

content/browser/service_worker/service_worker_version_unittest.cc

Index: content/browser/service_worker/service_worker_version_unittest.cc
diff --git a/content/browser/service_worker/service_worker_version_unittest.cc b/content/browser/service_worker/service_worker_version_unittest.cc
index 6f4c737b03c5004a6e1a2a90884fed9f4b15cdf2..e55c8a2f6d909fcab6430080a0470c7aa754f483 100644
--- a/content/browser/service_worker/service_worker_version_unittest.cc
+++ b/content/browser/service_worker/service_worker_version_unittest.cc
@@ -217,9 +217,7 @@ class ServiceWorkerVersionTest : public testing::Test {
 
     pattern_ = GURL("http://www.example.com/test/");
     registration_ = new ServiceWorkerRegistration(
-        pattern_,
-        1L,
-        helper_->context()->AsWeakPtr());
+        pattern_, false /* use_cache */, 1L, helper_->context()->AsWeakPtr());
     version_ = new ServiceWorkerVersion(
         registration_.get(),
         GURL("http://www.example.com/test/service_worker.js"),