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

content/browser/service_worker/service_worker_context_wrapper.cc

Index: content/browser/service_worker/service_worker_context_wrapper.cc
diff --git a/content/browser/service_worker/service_worker_context_wrapper.cc b/content/browser/service_worker/service_worker_context_wrapper.cc
index 62068edd0669953a3262fce82e283b394aa0ac8c..075877bfb84e438fbee83e7092319f62fde01636 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -212,16 +212,13 @@ static void FinishRegistrationOnIO(
 void ServiceWorkerContextWrapper::RegisterServiceWorker(
     const GURL& pattern,
     const GURL& script_url,
+    bool use_cache,
     const ResultCallback& continuation) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
-        BrowserThread::IO,
-        FROM_HERE,
-        base::Bind(&ServiceWorkerContextWrapper::RegisterServiceWorker,
-                   this,
-                   pattern,
-                   script_url,
-                   continuation));
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&ServiceWorkerContextWrapper::RegisterServiceWorker, this,
+                   pattern, script_url, use_cache, continuation));
     return;
   }
   if (!context_core_) {
@@ -229,9 +226,12 @@ void ServiceWorkerContextWrapper::RegisterServiceWorker(
                             base::Bind(continuation, false));
     return;
   }
-  context()->RegisterServiceWorker(
+  ServiceWorkerRegistrationOptions options(
       net::SimplifyUrlForRequest(pattern),
-      net::SimplifyUrlForRequest(script_url), NULL /* provider_host */,
+      use_cache ? ServiceWorkerRegistrationOptions::UseCache::Use
+                : ServiceWorkerRegistrationOptions::UseCache::DontUse);
+  context()->RegisterServiceWorker(
+      net::SimplifyUrlForRequest(script_url), options, NULL /* provider_host */,
       base::Bind(&FinishRegistrationOnIO, continuation));
 }