Add ResourceType::PING. and mark those requests as detachable.

webkit/common/resource_type.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/common/resource_type.h"
 
 #include "base/logging.h"
 
 using blink::WebURLRequest;
 
@@ skipping 22 matching lines @@
     case WebURLRequest::TargetIsWorker:
       return ResourceType::WORKER;
     case WebURLRequest::TargetIsSharedWorker:
       return ResourceType::SHARED_WORKER;
     case WebURLRequest::TargetIsPrefetch:
       return ResourceType::PREFETCH;
     case WebURLRequest::TargetIsFavicon:
       return ResourceType::FAVICON;
     case WebURLRequest::TargetIsXHR:
       return ResourceType::XHR;
+#if defined(WEBKIT_HAS_TARGET_IS_PING)
+    case WebURLRequest::TargetIsPing:
+      return ResourceType::PING;
+#endif
     default:
       NOTREACHED();
       return ResourceType::SUB_RESOURCE;
   }
 }