Get main frame and subframe AppCache loads to work.

content/browser/appcache/appcache_navigation_handle_core.cc

 // 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.
 
 #include "content/browser/appcache/appcache_navigation_handle_core.h"
 
 #include <map>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 32 matching lines @@
 
 AppCacheNavigationHandleCore::~AppCacheNavigationHandleCore() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   precreated_host_.reset(nullptr);
   g_appcache_handle_map.Get().erase(appcache_host_id_);
 }
 
 void AppCacheNavigationHandleCore::Initialize() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(precreated_host_.get() == nullptr);
-  precreated_host_.reset(
-      new AppCacheHost(appcache_host_id_, this, GetAppCacheService()));
+  precreated_host_.reset(new AppCacheHost(
+      appcache_host_id_, this,
+      static_cast<AppCacheServiceImpl*>(GetAppCacheService())));
 
   DCHECK(g_appcache_handle_map.Get().find(appcache_host_id_) ==
          g_appcache_handle_map.Get().end());
   g_appcache_handle_map.Get()[appcache_host_id_] = this;
 }
 
 // static
 std::unique_ptr<AppCacheHost> AppCacheNavigationHandleCore::GetPrecreatedHost(
     int host_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   auto index = g_appcache_handle_map.Get().find(host_id);
   if (index != g_appcache_handle_map.Get().end()) {
     AppCacheNavigationHandleCore* instance = index->second;
     DCHECK(instance);
     return std::move(instance->precreated_host_);
   }
   return std::unique_ptr<AppCacheHost>();
 }
 
-AppCacheServiceImpl* AppCacheNavigationHandleCore::GetAppCacheService() {
-  return static_cast<AppCacheServiceImpl*>(appcache_service_.get());
+ChromeAppCacheService* AppCacheNavigationHandleCore::GetAppCacheService() {
+  return appcache_service_.get();
 }
 
 void AppCacheNavigationHandleCore::OnCacheSelected(int host_id,
                                                    const AppCacheInfo& info) {
   DCHECK(false);
 }
 
 void AppCacheNavigationHandleCore::OnStatusChanged(
     const std::vector<int>& host_ids,
     AppCacheStatus status) {
@@ skipping 31 matching lines @@
   DCHECK(false);
 }
 
 void AppCacheNavigationHandleCore::OnContentBlocked(int host_id,
                                                     const GURL& manifest_url) {
   // Should never be called.
   DCHECK(false);
 }
 
 }  // namespace content