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

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 6238debe4b31c8b48d688218628b6fe0f4454af6..ca0fefa80d713ad868935204b1cc123173b1bd83 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.h
+++ b/content/browser/service_worker/service_worker_context_wrapper.h
@@ -53,6 +53,9 @@ class CONTENT_EXPORT ServiceWorkerContextWrapper
             storage::SpecialStoragePolicy* special_storage_policy);
   void Shutdown();
 
+  // False before initialization and after shutdown.
+  virtual bool IsAlive() const;
+
   // Deletes all files on disk and restarts the system asynchronously. This
   // leaves the system in a disabled state until it's done. This should be
   // called on the IO thread.
@@ -71,13 +74,18 @@ class CONTENT_EXPORT ServiceWorkerContextWrapper
       const GURL& pattern,
       const GURL& script_url,
       const ResultCallback& continuation) override;
-  virtual void UnregisterServiceWorker(const GURL& pattern,
-                                       const ResultCallback& continuation)
-      override;
+  virtual void UnregisterServiceWorker(
+      const GURL& pattern,
+      const ResultCallback& continuation) override;
   virtual void Terminate() override;
   virtual void GetAllOriginsInfo(const GetUsageInfoCallback& callback) override;
   virtual void DeleteForOrigin(const GURL& origin_url) override;
 
+  // DeleteForOrigin with completion callback.  Does not exit early, and returns
+  // false if one or more of the deletions fail.
+  virtual void DeleteForOrigin(const GURL& origin_url,
+                               const ResultCallback& done);
+
   void AddObserver(ServiceWorkerContextObserver* observer);
   void RemoveObserver(ServiceWorkerContextObserver* observer);
 
@@ -97,6 +105,8 @@ class CONTENT_EXPORT ServiceWorkerContextWrapper
   friend class base::RefCountedThreadSafe<ServiceWorkerContextWrapper>;
   friend class EmbeddedWorkerTestHelper;
   friend class ServiceWorkerProcessManager;
+  friend class MockServiceWorkerContextWrapper;
+
   virtual ~ServiceWorkerContextWrapper();
 
   void InitInternal(
@@ -113,9 +123,6 @@ class CONTENT_EXPORT ServiceWorkerContextWrapper
   void DidGetAllRegistrationsForGetAllOrigins(
       const GetUsageInfoCallback& callback,
       const std::vector<ServiceWorkerRegistrationInfo>& registrations);
-  void DidGetAllRegistrationsForDeleteForOrigin(
-      const GURL& origin,
-      const std::vector<ServiceWorkerRegistrationInfo>& registrations);
 
   const scoped_refptr<ObserverListThreadSafe<ServiceWorkerContextObserver> >
       observer_list_;