ServiceWorker: Add an API to fallback to renderer for CORS preflight

content/browser/service_worker/service_worker_url_request_job.h

Index: content/browser/service_worker/service_worker_url_request_job.h
diff --git a/content/browser/service_worker/service_worker_url_request_job.h b/content/browser/service_worker/service_worker_url_request_job.h
index 029871bed969260948766f54e73c318123c609b3..b303212485931c50578cdc7a849c743f41276100 100644
--- a/content/browser/service_worker/service_worker_url_request_job.h
+++ b/content/browser/service_worker/service_worker_url_request_job.h
@@ -156,6 +156,7 @@ class CONTENT_EXPORT ServiceWorkerURLRequestJob
   enum ResponseType {
     NOT_DETERMINED,
     FALLBACK_TO_NETWORK,
+    FALLBACK_TO_RENDERER,  // Use this when falling back with CORS check
     FORWARD_TO_SERVICE_WORKER,
   };
 
@@ -199,6 +200,19 @@ class CONTENT_EXPORT ServiceWorkerURLRequestJob
   // Creates and commits a response header indicating error.
   void DeliverErrorResponse();
 
+  // Restarts this job to fallback to network.
+  // This can be called after StartRequest.
+  void FinalizeToFallbackToNetwork();
+
+  // Sends back a response with fall_back_required set as true to trigger
+  // subsequent network requests with CORS checking.
+  // This can be called after StartRequest.
+  void FinalizeToFallbackToRenderer();
+
+  // true if need to send back a response with fall_back_required set as true to
+  // trigger subsequent network requests with CORS checking.
+  bool IsNeedToFallbackToRenderer();

[horo, 2016/06/29 05:31:35]

nit: const

[shimazu, 2016/07/04 06:31:11]

Done.

+
   // For UMA.
   void SetResponseBodyType(ResponseBodyType type);
   bool ShouldRecordResult();