Add ServiceWorker resource type for ServiceWorker script loading

BUG=313530
TEST=to be used by ServiceWorkerBrowserTest

Review URL: https://codereview.chromium.org/127713002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243736 0039d316-1c4b-4281-b951-d872f2087c98

webkit/common/resource_type.cc

@@ -42,6 +42,8 @@ ResourceType::Type ResourceType::FromTargetType(
       return ResourceType::XHR;
     case WebURLRequest::TargetIsPing:
       return ResourceType::PING;
+    case WebURLRequest::TargetIsServiceWorker:
+      return ResourceType::SERVICE_WORKER;
     default:
       NOTREACHED();
       return ResourceType::SUB_RESOURCE;

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.
   };