[ServiceWorker] Fetch event should return integrity value

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
@@ skipping 1055 matching lines @@
   return new_is_with_cors_mode == existing_was_with_cors_mode;
 }
 
 ResourceFetcher::RevalidationPolicy
 ResourceFetcher::DetermineRevalidationPolicy(
     Resource::Type type,
     const FetchParameters& fetch_params,
     Resource* existing_resource,
     bool is_static_data) const {
   const ResourceRequest& request = fetch_params.GetResourceRequest();
-

[yhirano, 2017/06/30 09:11:57]

Maybe you don't need this edit?

[xiaofengzhang, 2017/07/07 00:10:14]

Done.

   if (!existing_resource)
     return kLoad;
 
   // If the existing resource is loading and the associated fetcher is not equal
   // to |this|, we must not use the resource. Otherwise, CSP violation may
   // happen in redirect handling.
   if (existing_resource->Loader() &&
       existing_resource->Loader()->Fetcher() != this) {
     return kReload;
   }
@@ skipping 661 matching lines @@
   visitor->Trace(archive_);
   visitor->Trace(loaders_);
   visitor->Trace(non_blocking_loaders_);
   visitor->Trace(document_resources_);
   visitor->Trace(preloads_);
   visitor->Trace(matched_preloads_);
   visitor->Trace(resource_timing_info_map_);
 }
 
 }  // namespace blink