Add ServiceWorker resource type for ServiceWorker script loading

webkit/common/resource_type.h

Index: webkit/common/resource_type.h
diff --git a/webkit/common/resource_type.h b/webkit/common/resource_type.h
index 014a7224a2616b22cb42caa095a8d0603a432ccf..44fb4843308f4b2ae77506bb8ae26a63aeff88a9 100644
--- a/webkit/common/resource_type.h
+++ b/webkit/common/resource_type.h
@@ -30,6 +30,7 @@ class ResourceType {
     FAVICON,         // a favicon
     XHR,             // a XMLHttpRequest
     PING,            // a ping request for <a ping>
+    SERVICE_WORKER,  // the main resource of a service worker.
     LAST_TYPE        // Place holder so we don't need to change ValidType
                      // everytime.
   };