Select a more appropiate appcache based on the opener or the parent of the new document.

webkit/appcache/appcache_storage.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_APPCACHE_APPCACHE_STORAGE_H_
 #define WEBKIT_APPCACHE_APPCACHE_STORAGE_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 96 matching lines @@
   // old caches and responses from persistent storage (although they may still
   // linger in the in-memory working set until no longer needed). The new
   // cache will be added as the group's newest complete cache only if storage
   // succeeds.
   virtual void StoreGroupAndNewestCache(
       AppCacheGroup* group, AppCache* newest_cache, Delegate* delegate) = 0;
 
   // Schedules a query to identify a response for a main request. Upon
   // completion the delegate will be called back.
   virtual void FindResponseForMainRequest(
-      const GURL& url, Delegate* delegate) = 0;
+      const GURL& url,
+      const GURL& preferred_manifest_url,
+      Delegate* delegate) = 0;
 
   // Performs an immediate lookup of the in-memory cache to
   // identify a response for a sub resource request.
   virtual void FindResponseForSubRequest(
       AppCache* cache, const GURL& url,
       AppCacheEntry* found_entry, AppCacheEntry* found_fallback_entry,
       bool* found_network_namespace) = 0;
 
   // Immediately updates in-memory storage, if the cache is in memory,
   // and schedules a task to update persistent storage. If the cache is
@@ skipping 165 matching lines @@
 
   FRIEND_TEST_ALL_PREFIXES(AppCacheStorageTest, DelegateReferences);
 
   DISALLOW_COPY_AND_ASSIGN(AppCacheStorage);
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_STORAGE_H_