Get main frame and subframe AppCache loads to work.

content/browser/appcache/mock_appcache_storage.h

 // Copyright 2014 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 CONTENT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_
 #define CONTENT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 63 matching lines @@
   AppCacheResponseReader* CreateResponseReader(const GURL& manifest_url,
                                                int64_t response_id) override;
   AppCacheResponseWriter* CreateResponseWriter(
       const GURL& manifest_url) override;
   AppCacheResponseMetadataWriter* CreateResponseMetadataWriter(
       int64_t response_id) override;
   void DoomResponses(const GURL& manifest_url,
                      const std::vector<int64_t>& response_ids) override;
   void DeleteResponses(const GURL& manifest_url,
                        const std::vector<int64_t>& response_ids) override;
+  bool IsInitialized() override;
 
  private:
   friend class AppCacheRequestHandlerTest;
   friend class AppCacheServiceImplTest;
   friend class AppCacheUpdateJobTest;
   friend class MockAppCacheStorageTest;
 
   typedef base::hash_map<int64_t, scoped_refptr<AppCache>> StoredCacheMap;
   typedef std::map<GURL, scoped_refptr<AppCacheGroup> > StoredGroupMap;
   typedef std::set<int64_t> DoomedResponseIds;
@@ skipping 145 matching lines @@
                            StoreExistingGroupExistingCache);
   FRIEND_TEST_ALL_PREFIXES(AppCacheServiceImplTest,
                            DeleteAppCachesForOrigin);
 
   DISALLOW_COPY_AND_ASSIGN(MockAppCacheStorage);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_