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

Tools/DumpRenderTree/chromium/WebViewHost.cpp

 /*
  * Copyright (C) 2010, 2011, 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 417 matching lines @@
 }
 
 WebNavigationPolicy WebViewHost::decidePolicyForNavigation(
     WebFrame*, const WebURLRequest&,
     WebNavigationType, const WebNode&,
     WebNavigationPolicy defaultPolicy, bool)
 {
     return defaultPolicy;
 }
 
-bool WebViewHost::canHandleRequest(WebFrame*, const WebURLRequest& request)
-{
-    return true;
-}
-
-WebURLError WebViewHost::cancelledError(WebFrame*, const WebURLRequest& request)
-{
-    return webkit_support::CreateCancelledError(request);
-}
-
-void WebViewHost::unableToImplementPolicyWithError(WebFrame* frame, const WebURLError& error)
-{
-}
-
 void WebViewHost::didCreateDataSource(WebFrame*, WebDataSource* ds)
 {
     ds->setExtraData(m_pendingExtraData.leakPtr());
 }
 
 void WebViewHost::didCommitProvisionalLoad(WebFrame* frame, bool isNewNavigation)
 {
     updateForCommittedLoad(frame, isNewNavigation);
 }
 
@@ skipping 533 matching lines @@
 }
 
 #if ENABLE(MEDIA_STREAM)
 webkit_support::TestMediaStreamClient* WebViewHost::testMediaStreamClient()
 {
     if (!m_testMediaStreamClient.get())
         m_testMediaStreamClient = adoptPtr(new webkit_support::TestMediaStreamClient());
     return m_testMediaStreamClient.get();
 }
 #endif