Defend against selectCache() being called multiple times....

webkit/appcache/appcache_host.h

Index: webkit/appcache/appcache_host.h
===================================================================
--- webkit/appcache/appcache_host.h	(revision 75330)
+++ webkit/appcache/appcache_host.h	(working copy)
@@ -174,6 +174,9 @@
   // in use in any other host, this reference keeps the cache in  memory.
   scoped_refptr<AppCache> newest_cache_of_group_being_updated_;
 
+  // We defend against multiple calls to SelectCache() which should not happen.
+  bool was_select_cache_called_;
+
   // Keep a reference to the cache of the main resource so it survives frame
   // navigations.
   scoped_refptr<AppCache> main_resource_cache_;