Added quota client for serviceworker. Enables 'clear past <time> data'.

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index 762fb9b5442b5224efdf5a0a508f2046c1765d72..0de4f3d21a476596e6b27421e87141e5f2a8c1da 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -151,6 +151,11 @@ class CONTENT_EXPORT ServiceWorkerContextCore
                              const RegistrationCallback& callback);
   void UnregisterServiceWorker(const GURL& pattern,
                                const UnregistrationCallback& callback);
+  // Callback is called issued after all unregistrations occur.  The Status
+  // is populated as SERVICE_WORKER_OK if all succeed, or SERVICE_WORKER_FAILED
+  // if any did not succeed.
+  void UnregisterServiceWorkers(const GURL& origin,
+                                const UnregistrationCallback& callback);
   void UpdateServiceWorker(ServiceWorkerRegistration* registration);
 
   // This class maintains collections of live instances, this class
@@ -200,6 +205,11 @@ class CONTENT_EXPORT ServiceWorkerContextCore
                               const UnregistrationCallback& callback,
                               ServiceWorkerStatusCode status);
 
+  void DidGetAllRegistrationsForUnregisterForOrigin(
+      const UnregistrationCallback& result,
+      const GURL& origin,
+      const std::vector<ServiceWorkerRegistrationInfo>& registrations);
+
   base::WeakPtrFactory<ServiceWorkerContextCore> weak_factory_;
   // It's safe to store a raw pointer instead of a scoped_refptr to |wrapper_|
   // because the Wrapper::Shutdown call that hops threads to destroy |this| uses