Get main frame and subframe AppCache loads to work.

content/browser/appcache/appcache_navigation_handle_core.h

 // Copyright 2016 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_APPCACHE_NAVIGATION_HANDLE_CORE_H_
 #define CONTENT_BROWSER_APPCACHE_APPCACHE_NAVIGATION_HANDLE_CORE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 26 matching lines @@
   // Returns the raw AppCacheHost pointer. Ownership remains with this class.
   AppCacheHost* host() { return precreated_host_.get(); }
 
   // Initializes this instance. Should be called on the IO thread.
   void Initialize();
 
   // Returns the precreated AppCacheHost pointer. Ownership of the host is
   // released here.
   static std::unique_ptr<AppCacheHost> GetPrecreatedHost(int host_id);
 
-  AppCacheServiceImpl* GetAppCacheService();
+  ChromeAppCacheService* GetAppCacheService();
 
  protected:
   // AppCacheFrontend methods
   // We don't expect calls on the AppCacheFrontend methods while the
   // AppCacheHost is not registered with the AppCacheBackend.
   void OnCacheSelected(int host_id, const AppCacheInfo& info) override;
   void OnStatusChanged(const std::vector<int>& host_ids,
                        AppCacheStatus status) override;
   void OnEventRaised(const std::vector<int>& host_ids,
                      AppCacheEventID event_id) override;
@@ skipping 13 matching lines @@
   scoped_refptr<ChromeAppCacheService> appcache_service_;
   int appcache_host_id_;
   base::WeakPtr<AppCacheNavigationHandle> ui_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(AppCacheNavigationHandleCore);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_NAVIGATION_HANDLE_CORE_H_