Add 'XHR' to the Resource::Type enum, and use it for XHR requests.

Source/core/inspector/InspectorPageAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 232 matching lines @@
     if (cachedResource) {
         switch (cachedResource->type()) {
         case Resource::CSSStyleSheet:
             *result = toCSSStyleSheetResource(cachedResource)->sheetText(false);
             return true;
         case Resource::Script:
             *result = toScriptResource(cachedResource)->script();
             return true;
         case Resource::MainResource:
             return false;
+        case Resource::XMLHttpRequest:
         case Resource::Raw: {
             SharedBuffer* buffer = cachedResource->resourceBuffer();
             if (!buffer)
                 return false;
             OwnPtr<TextResourceDecoder> decoder = createXHRTextDecoder(cachedResource->response().mimeType(), cachedResource->response().textEncodingName());
             String content = decoder->decode(buffer->data(), buffer->size());
             *result = content + decoder->flush();
             return true;
         }
         default:
@@ skipping 83 matching lines @@
         return InspectorPageAgent::MediaResource;
     case Resource::TextTrack:
         return InspectorPageAgent::TextTrackResource;
     case Resource::CSSStyleSheet:
         // Fall through.
     case Resource::XSLStyleSheet:
         return InspectorPageAgent::StylesheetResource;
     case Resource::Script:
         return InspectorPageAgent::ScriptResource;
     case Resource::Raw:
+    case Resource::XMLHttpRequest:
         return InspectorPageAgent::XHRResource;
     case Resource::ImportResource:
         // Fall through.
     case Resource::MainResource:
         return InspectorPageAgent::DocumentResource;
     default:
         break;
     }
     return InspectorPageAgent::OtherResource;
 }
@@ skipping 1021 matching lines @@
 bool InspectorPageAgent::getEditedResourceContent(const String& url, String* content)
 {
     if (!m_editedResourceContent.contains(url))
         return false;
     *content = m_editedResourceContent.get(url);
     return true;
 }
 
 } // namespace WebCore