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

Tools/DumpRenderTree/chromium/WebViewHost.cpp

Index: Tools/DumpRenderTree/chromium/WebViewHost.cpp
diff --git a/Tools/DumpRenderTree/chromium/WebViewHost.cpp b/Tools/DumpRenderTree/chromium/WebViewHost.cpp
index add05f74db4edfb24590c0fb890e8bd90ea13593..3450e26748688ec5ab0e9513c78856c790390a79 100644
--- a/Tools/DumpRenderTree/chromium/WebViewHost.cpp
+++ b/Tools/DumpRenderTree/chromium/WebViewHost.cpp
@@ -433,6 +433,20 @@ WebNavigationPolicy WebViewHost::decidePolicyForNavigation(
     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());