iwyu: Use callback_old.h where appropriate, part 1.

webkit/glue/alt_error_page_resource_fetcher.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_ALT_ERROR_PAGE_RESOURCE_FETCHER_H_
 #define WEBKIT_GLUE_ALT_ERROR_PAGE_RESOURCE_FETCHER_H_
 
-#include "base/callback.h"
+#include "base/callback_old.h"
 #include "base/memory/scoped_ptr.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLError.h"
 
 namespace WebKit {
 class WebFrame;
 class WebURLResponse;
 }
 
 namespace webkit_glue {
@@ skipping 31 matching lines @@
   // The error associated with this load.  If there's an error talking with the
   // alt error page server, we need this to complete the original load.
   WebKit::WebURLError original_error_;
 
   DISALLOW_COPY_AND_ASSIGN(AltErrorPageResourceFetcher);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_ALT_ERROR_PAGE_RESOURCE_FETCHER_H_