Create errors (especially cancellation errors) internally to WebCore, rather

Source/Platform/chromium/src/Platform.cpp

 /*
  * Copyright (C) 2012 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include <public/Platform.h>
 
+#include <public/WebURLError.h>
+
 namespace WebKit {
 
 static Platform* s_platform = 0;
 
 void Platform::initialize(Platform* platform)
 {
     s_platform = platform;
 }
 
 void Platform::shutdown()
 {
     s_platform = 0;
 }
 
 Platform* Platform::current()
 {
     return s_platform;
 }
 
+WebURLError Platform::cancelledError(const WebURL& unreachableURL) const
+{
+    WebURLError error;
+    error.unreachableURL = unreachableURL;
+    error.isCancellation = true;
+    return error;
+}
+
 } // namespace WebKit