ServiceWorker: Update the install sequence as per the latest spec

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 1362f0952c58bab981f37ac96ede5b0e1463d898..54b1f8014567dbecd21a97853f1a4a89f0fc71c7 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -185,10 +185,11 @@ IPC_MESSAGE_ROUTED1(ServiceWorkerHostMsg_CacheStorageKeys,
 // on the correct thread.
 
 // Response to ServiceWorkerMsg_RegisterServiceWorker.
-IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_ServiceWorkerRegistered,
+IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_ServiceWorkerRegistered,
                      int /* thread_id */,
                      int /* request_id */,
-                     content::ServiceWorkerRegistrationObjectInfo)
+                     content::ServiceWorkerRegistrationObjectInfo,
+                     content::ServiceWorkerVersionAttributes)
 
 // Response to ServiceWorkerMsg_UnregisterServiceWorker.
 IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_ServiceWorkerUnregistered,
@@ -217,6 +218,12 @@ IPC_MESSAGE_CONTROL5(ServiceWorkerMsg_SetVersionAttributes,
                      int /* changed_mask */,
                      content::ServiceWorkerVersionAttributes)
 
+// Informs the child process that new ServiceWorker enters the installation
+// process.

[nasko, 2014/08/29 21:17:37]

nit: s/process/phase/? process is already used for the "child process" so is the
"installation process" another OS level process or is it a phase of the lifetime
of a service worker?

Also, UpdateFound doesn't sound like installation, rather an update.

[nhiroki, 2014/09/01 03:46:41]

Good point. I meant the latter. Replaced 'process' with 'phase'.
This is a jargon in the ServiceWorker, so I'd like to keep it as is.
https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#se...

+IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_UpdateFound,
+                     int /* thread_id */,
+                     content::ServiceWorkerRegistrationObjectInfo)
+
 // Tells the child process to set the controller ServiceWorker for the given
 // provider.
 IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_SetControllerServiceWorker,