[ServiceWorker] Fetch event should return integrity value

content/child/web_url_request_util.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_CHILD_WEB_URL_REQUEST_UTIL_H_
 #define CONTENT_CHILD_WEB_URL_REQUEST_UTIL_H_
 
 #include <string>
 
 #include "content/common/content_export.h"
@@ skipping 35 matching lines @@
     const blink::WebURLRequest& request);
 
 // Helper functions to convert enums from the blink type to the content
 // type.
 FetchRequestMode GetFetchRequestModeForWebURLRequest(
     const blink::WebURLRequest& request);
 FetchCredentialsMode GetFetchCredentialsModeForWebURLRequest(
     const blink::WebURLRequest& request);
 FetchRedirectMode GetFetchRedirectModeForWebURLRequest(
     const blink::WebURLRequest& request);
+std::string GetFetchIntegrityForWebURLRequest(
+    const blink::WebURLRequest& request);
 RequestContextFrameType GetRequestContextFrameTypeForWebURLRequest(
     const blink::WebURLRequest& request);
 RequestContextType GetRequestContextTypeForWebURLRequest(
     const blink::WebURLRequest& request);
 blink::WebMixedContentContextType GetMixedContentContextTypeForWebURLRequest(
     const blink::WebURLRequest& request);
 ServiceWorkerMode GetServiceWorkerModeForWebURLRequest(
     const blink::WebURLRequest& request);
 
 // Generates a WebURLError based on |reason|.
 blink::WebURLError CreateWebURLError(const blink::WebURL& unreachable_url,
                                      bool stale_copy_in_cache,
                                      int reason);
 
 // Generates a WebURLError based on |reason|.
 blink::WebURLError CreateWebURLError(const blink::WebURL& unreachable_url,
                                      bool stale_copy_in_cache,
                                      int reason,
                                      bool was_ignored_by_handler);
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEB_URL_REQUEST_UTIL_H_