[ServiceWorker] Added size deltas and total size computation for QuotaM.

content/browser/service_worker/service_worker_version.h

Index: content/browser/service_worker/service_worker_version.h
diff --git a/content/browser/service_worker/service_worker_version.h b/content/browser/service_worker/service_worker_version.h
index 24dd459dfb369ab05a3bc5032207fa120a79a985..e116534f603d450f2f11f95e4f34fbb2d1fc744f 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -109,6 +109,14 @@ class CONTENT_EXPORT ServiceWorkerVersion
   ServiceWorkerVersionInfo GetInfo();
   Status status() const { return status_; }
 
+  size_t resources_total_size_bytes() const {
+    return resources_total_size_bytes_;
+  }
+  // Should only be called by ServiceWorkerStorage::StoreRegistration
+  void set_resources_total_size_bytes(size_t resources_total_size_bytes) {
+    resources_total_size_bytes_ = resources_total_size_bytes;
+  }
+
   // This sets the new status and also run status change callbacks
   // if there're any (see RegisterStatusChangeCallback).
   void SetStatus(Status status);
@@ -274,6 +282,7 @@ class CONTENT_EXPORT ServiceWorkerVersion
   GURL script_url_;
   GURL scope_;
   Status status_;
+  size_t resources_total_size_bytes_;
   scoped_ptr<EmbeddedWorkerInstance> embedded_worker_;
   scoped_ptr<ServiceWorkerCacheListener> cache_listener_;
   std::vector<StatusCallback> start_callbacks_;