WTF::notFound looks too much like a local variable.

Source/web/WebPageSerializer.cpp

 /*
  * Copyright (C) 2009 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 247 matching lines @@
                                   &frameKURLs, &resourceKURLs);
     }
 
     // Converts the results to WebURLs.
     WebVector<WebURL> resultResourceURLs(resourceKURLs.size());
     for (size_t i = 0; i < resourceKURLs.size(); ++i) {
         resultResourceURLs[i] = resourceKURLs[i];
         // A frame's src can point to the same URL as another resource, keep the
         // resource URL only in such cases.
         size_t index = frameKURLs.find(resourceKURLs[i]);
-        if (index != notFound)
+        if (index != kNotFound)
             frameKURLs.remove(index);
     }
     *resourceURLs = resultResourceURLs;
     WebVector<WebURL> resultFrameURLs(frameKURLs.size());
     for (size_t i = 0; i < frameKURLs.size(); ++i)
         resultFrameURLs[i] = frameKURLs[i];
     *frameURLs = resultFrameURLs;
 
     return true;
 }
@@ skipping 13 matching lines @@
 
 WebString WebPageSerializer::generateBaseTagDeclaration(const WebString& baseTarget)
 {
     if (baseTarget.isEmpty())
         return String("<base href=\".\">");
     String baseString = "<base href=\".\" target=\"" + static_cast<const String&>(baseTarget) + "\">";
     return baseString;
 }
 
 } // namespace WebKit