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

webkit/common/resource_type.h

 // 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.
 
 #ifndef WEBKIT_COMMON_RESOURCE_TYPE_H__
 #define WEBKIT_COMMON_RESOURCE_TYPE_H__
 
 #include "base/basictypes.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "webkit/common/webkit_common_export.h"
@@ skipping 11 matching lines @@
     FONT_RESOURCE,   // a font
     SUB_RESOURCE,    // an "other" subresource.
     OBJECT,          // an object (or embed) tag for a plugin,
                      // or a resource that a plugin requested.
     MEDIA,           // a media resource.
     WORKER,          // the main resource of a dedicated worker.
     SHARED_WORKER,   // the main resource of a shared worker.
     PREFETCH,        // an explicitly requested prefetch
     FAVICON,         // a favicon
     XHR,             // a XMLHttpRequest
+    PING,            // a ping request for <a ping>
     LAST_TYPE        // Place holder so we don't need to change ValidType
                      // everytime.
   };
 
   static bool ValidType(int32 type) {
     return type >= MAIN_FRAME && type < LAST_TYPE;
   }
 
   static Type FromInt(int32 type) {
     return static_cast<Type>(type);
@@ skipping 19 matching lines @@
            type == WORKER ||
            type == XHR;
   }
 
  private:
   // Don't instantiate this class.
   ResourceType();
   ~ResourceType();
 };
 #endif  // WEBKIT_COMMON_RESOURCE_TYPE_H__