Add support for WebURLRequest::TargetIsXHR (part I)

webkit/glue/resource_type.h

 // Copyright (c) 2011 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_GLUE_RESOURCE_TYPE_H__
 #define WEBKIT_GLUE_RESOURCE_TYPE_H__
 
 #include "base/basictypes.h"
 
 class ResourceType {
  public:
   enum Type {
     MAIN_FRAME = 0,  // top level page
     SUB_FRAME,       // frame or iframe
     STYLESHEET,      // a CSS stylesheet
     SCRIPT,          // an external script
     IMAGE,           // an image (jpg/gif/png/etc)
     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
     PRERENDER,       // an explicitly requested prerender
     FAVICON,         // a favicon
+    XHR,             // a XMLHttpRequest
     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);
   }
 
   static bool IsFrame(ResourceType::Type type) {
     return type == MAIN_FRAME || type == SUB_FRAME;
   }
 
   static bool IsSharedWorker(ResourceType::Type type) {
     return type == SHARED_WORKER;
   }
 
   static bool IsSubresource(ResourceType::Type type) {
     return type == STYLESHEET ||
            type == SCRIPT ||
            type == IMAGE ||
            type == FONT_RESOURCE ||
            type == SUB_RESOURCE ||
-           type == WORKER;
+           type == WORKER ||
+           type == XHR;
   }
 
  private:
   // Don't instantiate this class.
   ResourceType();
   ~ResourceType();
 };
 #endif  // WEBKIT_GLUE_RESOURCE_TYPE_H__