Implement headers attributes in ForeignFetchResponse

content/common/service_worker/service_worker_types.h

Index: content/common/service_worker/service_worker_types.h
diff --git a/content/common/service_worker/service_worker_types.h b/content/common/service_worker/service_worker_types.h
index 81f7d4f7d508f1f5021e3cf0fd1cb35081ae1469..b6ea88dd52b38c5b71ee6e6f6397402fd2dbbc5b 100644
--- a/content/common/service_worker/service_worker_types.h
+++ b/content/common/service_worker/service_worker_types.h
@@ -121,8 +121,10 @@ struct ServiceWorkerCaseInsensitiveCompare {
   }
 };
 
-typedef std::map<std::string, std::string, ServiceWorkerCaseInsensitiveCompare>
-    ServiceWorkerHeaderMap;
+using ServiceWorkerHeaderMap =
+    std::map<std::string, std::string, ServiceWorkerCaseInsensitiveCompare>;
+
+using ServiceWorkerHeaderList = std::vector<std::string>;
 
 // To dispatch fetch request from browser to child process.
 struct CONTENT_EXPORT ServiceWorkerFetchRequest {
@@ -155,18 +157,20 @@ struct CONTENT_EXPORT ServiceWorkerFetchRequest {
 // Represents a response to a fetch.
 struct CONTENT_EXPORT ServiceWorkerResponse {
   ServiceWorkerResponse();
-  ServiceWorkerResponse(const GURL& url,
-                        int status_code,
-                        const std::string& status_text,
-                        blink::WebServiceWorkerResponseType response_type,
-                        const ServiceWorkerHeaderMap& headers,
-                        const std::string& blob_uuid,
-                        uint64_t blob_size,
-                        const GURL& stream_url,
-                        blink::WebServiceWorkerResponseError error,
-                        base::Time response_time,
-                        bool is_in_cache_storage,
-                        const std::string& cache_storage_cache_name);
+  ServiceWorkerResponse(
+      const GURL& url,
+      int status_code,
+      const std::string& status_text,
+      blink::WebServiceWorkerResponseType response_type,
+      const ServiceWorkerHeaderMap& headers,
+      const std::string& blob_uuid,
+      uint64_t blob_size,
+      const GURL& stream_url,
+      blink::WebServiceWorkerResponseError error,
+      base::Time response_time,
+      bool is_in_cache_storage,
+      const std::string& cache_storage_cache_name,
+      const ServiceWorkerHeaderList& cors_exposed_header_names);
   ServiceWorkerResponse(const ServiceWorkerResponse& other);
   ~ServiceWorkerResponse();
 
@@ -182,6 +186,7 @@ struct CONTENT_EXPORT ServiceWorkerResponse {
   base::Time response_time;
   bool is_in_cache_storage = false;
   std::string cache_storage_cache_name;
+  ServiceWorkerHeaderList cors_exposed_header_names;
 };
 
 // Represents initialization info for a WebServiceWorker object.