Support dispatching ServiceWorker FetchEvent and receiving response

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 10444de002ec58e0ee9ff1136c6aeb1343c6c309..b786d85c50f2b04273a684489371abea5ebcdd52 100644
--- a/content/common/service_worker/service_worker_types.h
+++ b/content/common/service_worker/service_worker_types.h
@@ -15,6 +15,10 @@
 // This file is to have common definitions that are to be shared by
 // browser and child process.
 
+namespace blink {
+class WebServiceWorkerResponse;
+}
+
 namespace content {
 
 // Indicates invalid request ID (i.e. the sender does not expect it gets
@@ -38,15 +42,20 @@ struct CONTENT_EXPORT ServiceWorkerFetchRequest {
   std::map<std::string, std::string> headers;
 };
 
-// The response sent from the child process to the browser.
-struct CONTENT_EXPORT ServiceWorkerFetchResponse {
-  ServiceWorkerFetchResponse();
-  ServiceWorkerFetchResponse(
-      int status_code,
-      const std::string& status_text,
-      const std::string& method,
-      const std::map<std::string, std::string>& headers);
-  ~ServiceWorkerFetchResponse();
+// Indicates how the service worker handled a fetch event.
+enum ServiceWorkerFetchEventResult {
+  // Browser should fallback to native fetch.
+  SERVICE_WORKER_FETCH_RESULT_FALLBACK,

[Tom Sepez, 2014/03/05 21:07:01]

nit:  The string "Event" appears in the type name, but not in these constants. 
Maybe that should be consistent.

[falken, 2014/03/06 15:58:54]

Agreed, especially since we want to distinguish between fetch() and FetchEvent
for ServiceWorker. Done.

+  // Service worker provided a ServiceWorkerResponse.
+  SERVICE_WORKER_FETCH_RESULT_RESPONSE
+};

[Tom Sepez, 2014/03/05 19:45:02]

add SERVICE_WORKER_FETCH_EVENT_RESULT_LAST =
SERVICE_WORKER_FETCH_RESULT_RESPONSE

[falken, 2014/03/06 15:58:54]

Done.

+
+// Represents a response to a fetch.
+struct CONTENT_EXPORT ServiceWorkerResponse {
+  ServiceWorkerResponse();
+  explicit ServiceWorkerResponse(
+      const blink::WebServiceWorkerResponse& response);
+  ~ServiceWorkerResponse();
 
   int status_code;
   std::string status_text;