Restore code removed temporarily for refactoring on WebApplicationCacheHost in Blink

content/child/appcache/web_application_cache_host_impl.h

 // Copyright 2013 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_CHILD_APPCACHE_WEB_APPLICATION_CACHE_HOST_IMPL_H_
 #define CONTENT_CHILD_APPCACHE_WEB_APPLICATION_CACHE_HOST_IMPL_H_
 
 #include <string>
 
 #include "content/common/appcache_interfaces.h"
@@ skipping 28 matching lines @@
                             const std::string& message) {}
   virtual void OnContentBlocked(const GURL& manifest_url) {}
 
   // blink::WebApplicationCacheHost:
   virtual void willStartMainResourceRequest(
       blink::WebURLRequest&, const blink::WebApplicationCacheHost*);
   virtual void willStartSubResourceRequest(blink::WebURLRequest&);
   virtual void selectCacheWithoutManifest();
   virtual bool selectCacheWithManifest(const blink::WebURL& manifestURL);
   virtual void didReceiveResponseForMainResource(const blink::WebURLResponse&);
-  // TODO(tyoshino): Revive didReceiveDataForMainResource once Blink side
-  // refactoring is done. See crbug.com/418885.
+  virtual void didReceiveDataForMainResource(const char* data, unsigned len);
   virtual void didFinishLoadingMainResource(bool success);
   virtual blink::WebApplicationCacheHost::Status status();
   virtual bool startUpdate();
   virtual bool swapCache();
   virtual void getResourceList(blink::WebVector<ResourceInfo>* resources);
   virtual void getAssociatedCacheInfo(CacheInfo* info);
 
  private:
   enum IsNewMasterEntry {
     MAYBE,
@@ skipping 11 matching lines @@
   bool is_get_method_;
   IsNewMasterEntry is_new_master_entry_;
   AppCacheInfo cache_info_;
   GURL original_main_resource_url_;  // Used to detect redirection.
   bool was_select_cache_called_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_APPCACHE_WEB_APPLICATION_CACHE_HOST_IMPL_H_