AppCaches which belong to hosted apps are not protected from deletion

webkit/appcache/appcache_service.h

Index: webkit/appcache/appcache_service.h
diff --git a/webkit/appcache/appcache_service.h b/webkit/appcache/appcache_service.h
index 4952c941270c17ab87b63d78ae5d273c53652229..a0d9abe672b93a987f9bda2a207176a887b9efce 100644
--- a/webkit/appcache/appcache_service.h
+++ b/webkit/appcache/appcache_service.h
@@ -73,9 +73,9 @@ class AppCacheService {
   // Populates 'collection' with info about all of the appcaches stored
   // within the service, 'callback' is invoked upon completion. The service
   // acquires a reference to the 'collection' until until completion.
-  // This method always completes asynchronously.
-  void GetAllAppCacheInfo(AppCacheInfoCollection* collection,
-                          net::CompletionCallback* callback);
+  // This method always completes asynchronously. (virtual for unittesting)
+  virtual void GetAllAppCacheInfo(AppCacheInfoCollection* collection,
+                                  net::CompletionCallback* callback);
 
   // Deletes the group identified by 'manifest_url', 'callback' is
   // invoked upon completion. Upon completion, the cache group and