[ServiceWorker] Fetch event should return integrity value

content/child/web_url_request_util.cc

Index: content/child/web_url_request_util.cc
diff --git a/content/child/web_url_request_util.cc b/content/child/web_url_request_util.cc
index d19aef22b2c005829357c7c40090f5519beb9fdd..fbc1c4b9fde23fe0b57699ecc55b4a0622251fd1 100644
--- a/content/child/web_url_request_util.cc
+++ b/content/child/web_url_request_util.cc
@@ -381,6 +381,11 @@ FetchRedirectMode GetFetchRedirectModeForWebURLRequest(
   return static_cast<FetchRedirectMode>(request.GetFetchRedirectMode());
 }
 
+std::string GetFetchIntegrityForWebURLRequest(
+    const blink::WebURLRequest& request) {
+  return request.GetFetchIntegrity().Utf8();
+}
+
 STATIC_ASSERT_ENUM(REQUEST_CONTEXT_FRAME_TYPE_AUXILIARY,
                    WebURLRequest::kFrameTypeAuxiliary);
 STATIC_ASSERT_ENUM(REQUEST_CONTEXT_FRAME_TYPE_NESTED,