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

content/browser/service_worker/service_worker_context_wrapper.h

Index: content/browser/service_worker/service_worker_context_wrapper.h
diff --git a/content/browser/service_worker/service_worker_context_wrapper.h b/content/browser/service_worker/service_worker_context_wrapper.h
index 0670c0c3bb8452ba607eaf908ed03f24beecd54b..a015e8c61c7b9edf381d09236d03eb914490f5f1 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.h
+++ b/content/browser/service_worker/service_worker_context_wrapper.h
@@ -115,10 +115,19 @@ class CONTENT_EXPORT ServiceWorkerContextWrapper
 
   void DidDeleteAndStartOver(ServiceWorkerStatusCode status);
 
+  void CombineUsageInfo(std::vector<ServiceWorkerUsageInfo>* usage_info,
+                        std::map<GURL, int64>* usage_map,
+                        const GetUsageInfoCallback& callback);
+
   void DidGetAllRegistrationsForGetAllOrigins(
-      const GetUsageInfoCallback& callback,
+      const base::Closure& closure,
+      std::vector<ServiceWorkerUsageInfo>* usage_info_out,
       const std::vector<ServiceWorkerRegistrationInfo>& registrations);
 
+  void DidGetUsageForAllOrigins(const base::Closure& closure,
+                                std::map<GURL, int64>* usage_out,
+                                const std::map<GURL, int64>& usage_map);
+
   const scoped_refptr<ObserverListThreadSafe<ServiceWorkerContextObserver> >
       observer_list_;
   const scoped_ptr<ServiceWorkerProcessManager> process_manager_;