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

content/common/service_worker/service_worker_messages.h

Index: content/common/service_worker/service_worker_messages.h
diff --git a/content/common/service_worker/service_worker_messages.h b/content/common/service_worker/service_worker_messages.h
index 9c75a89adc69a100d04743a1cef46d63db260c93..b9d56eb9502580a742b799cee9afb85c61a2291c 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -110,9 +110,16 @@ IPC_STRUCT_TRAITS_END()
 IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerRegistrationObjectInfo)
   IPC_STRUCT_TRAITS_MEMBER(handle_id)
   IPC_STRUCT_TRAITS_MEMBER(scope)
+  IPC_STRUCT_TRAITS_MEMBER(use_cache)
   IPC_STRUCT_TRAITS_MEMBER(registration_id)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerRegistrationAttributes)
+  IPC_STRUCT_TRAITS_MEMBER(pattern)
+  IPC_STRUCT_TRAITS_MEMBER(script_url)
+  IPC_STRUCT_TRAITS_MEMBER(use_cache)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerVersionAttributes)
   IPC_STRUCT_TRAITS_MEMBER(installing)
   IPC_STRUCT_TRAITS_MEMBER(waiting)
@@ -149,12 +156,11 @@ IPC_STRUCT_TRAITS_END()
 //---------------------------------------------------------------------------
 // Messages sent from the child process to the browser.
 
-IPC_MESSAGE_CONTROL5(ServiceWorkerHostMsg_RegisterServiceWorker,
+IPC_MESSAGE_CONTROL4(ServiceWorkerHostMsg_RegisterServiceWorker,
                      int /* thread_id */,
                      int /* request_id */,
                      int /* provider_id */,
-                     GURL /* scope */,
-                     GURL /* script_url */)
+                     content::ServiceWorkerRegistrationAttributes)
 
 IPC_MESSAGE_CONTROL4(ServiceWorkerHostMsg_UpdateServiceWorker,
                      int /* thread_id */,